Armed police block a road near to the Manchester Arena in central Manchester, England, Tuesday, May 23, 2017. An explosion struck an Ariana Grande concert in northern England late Monday, killing over... (Associated Press) 
 
 Armed police block a road near to the Manchester Arena in central Manchester, England, Tuesday, May 23, 2017. An explosion struck an Ariana Grande concert in northern England late Monday, killing over a dozen people and injuring dozens in what police say they are treating as a terrorist attack. (AP... (Associated Press) 
 
 MANCHESTER, England (AP) — An explosion struck an Ariana Grande concert attended by thousands of young music fans in northern England, killing at least 19 people and injuring dozens in what police said Tuesday was being treated as a terrorist attack. 
 
 Greater Manchester Police said 19 people were confirmed dead after the explosion at Manchester Arena. Northwest Ambulance Service said 59 injured people had been taken to hospitals, and a number of "walking wounded" were treated at the scene. 
 
 Police cars, bomb-disposal units and 60 ambulances raced to the scene as the scale of the carnage became clear. 
 
 "We are currently treating this as a terrorist incident until we know otherwise," said Ian Hopkins, chief constable of Greater Manchester Police. 
 
 There was panic after the explosion, which struck around 10:30 p.m. (2130GMT) Monday night as Grande was ending the concert, part of her Dangerous Woman Tour. 
 
 Grande, who was not injured, tweeted hours later: "Broken. From the bottom of my heart, I am so so sorry. I don't have words." 
 
 Manchester Arena said on its website that the blast struck outside the venue as concertgoers were leaving. Some eyewitnesses said it happened in the foyer of the arena just after the concert ended. 
 
 One witness said Grande had just finished her final song and said "Thank you, Manchester," before leaving the stage. 
 
 The incident led to a nightlong search for loved ones as parents tried to locate their teenage children and groups of friends scattered by the explosion sought to find one another. 
 
 Taxi services offered to give stranded concertgoers rides home for free, and residents opened their homes to provide lodging for people who could not get home because public transport had shut down. 
 
 City officials said the true spirit of Manchester would shine through despite the horrendous incident. 
 
 Twitter and Facebook were filled with appeals for information about people who had not been accounted for. 
 
 Jenny Brewster said she was leaving the concert with her 11-year-old daughter when the blast hit. 
 
 "As I turned around, boom, one loud noise," she told Sky News. "A gentleman said 'run!' so we ran." 
 
 Outside, she said, "you could smell the burning." 
 
 Britain's terrorist threat level stands at "severe," the second-highest rung on a five-point scale, meaning an attack is highly likely. 
 
 There was no immediate claim of responsibility. Online, supporters of the extremist Islamic State group, which holds territory in Iraq's Mosul and around its de facto capital in the Syrian city of Raqqa, celebrated the blast. 
 
 One wrote: "May they taste what the weak people in Mosul and (Raqqa) experience from their being bombed and burned," according to the U.S.-based SITE Intelligence Group. 
 
 If the incident is confirmed as a terrorist attack it would be the deadliest in Britain since four suicide bombers killed 52 London commuters on three subway trains and a bus in July 2005. 
 
 "A huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena," said concertgoer Majid Khan, 22. "It was one bang and essentially everyone from the other side of the arena where the bang was heard from suddenly came running towards us as they were trying to exit." 
 
 Added Oliver Jones, 17: "The bang echoed around the foyer of the arena and people started to run." 
 
 Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons. 
 
 British Prime Minister Theresa May said the government was working to establish "the full details of what is being treated by the police as an appalling terrorist attack." 
 
 May is due to chair a meeting of the government's COBRA emergency committee later Tuesday. She and other candidates suspended campaigning for Britain's June 8 election after the blast. 
 
 Police advised the public to avoid the area around the Manchester Arena, and the train station near the arena, Victoria Station, was evacuated and all trains canceled. 
 
 The Dangerous Woman tour is the third concert tour by 23-year-old Grande and supports her third studio album, "Dangerous Woman." 
 
 Grande's role as Cat Valentine on Nickelodeon's high school sitcom "Victorious" propelled her to teen idol status, starting in 2010. 
 
 The tour began in Phoenix, Arizona, in February. After Manchester, Grande was to perform at venues in Europe, including Belgium, Poland, Germany, Switzerland and France, with concerts in Latin America and Asia to follow. 
 
 Pop concerts and nightclubs have been a terrorism target before. Almost 90 people were killed by gunmen inspired by the extremist Islamic State group at the Bataclan concert hall in Paris during a performance by Eagles of Death Metal in November 2015. 
 
 In Turkey, 39 people died when a gunman attacked New Year's revelers at the Reina nightclub in Istanbul. 
 
 There was no immediate claim of responsibility for the attack. Online, supporters of Islamic State, which holds territory in Iraq's Mosul and around its de facto capital in the Syrian city of Raqqa, celebrated the incident. One wrote: "May they taste what the weak people in Mosul and (Raqqa) experience from their being bombed and burned," according to the U.S.-based SITE Intelligence Group. 
 
 Manchester, 160 miles (260 kilometers) northwest of London, was hit by a huge Irish Republican Army bomb in 1996 that leveled a swath of the city center. More than 200 people were injured, though no one was killed. 
 
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 Katz and Lawless reported from London. AP writer Leanne Italie in New York and AP Music Writer Mesfin Fekadu in Jersey City, New Jersey, contributed to this report. ||||| Ariana Grande Manchester Concert: 19 Fatalities Confirmed After Explosion 
 
 UPDATE 3: Manchester police confirmed 19 are dead and around 50 injured. They received "reports of an explosion at Manchester Arena" just before 10:35pm local time. British Transportation Police report, "Officers are at Manchester Arena following reports of an explosion within the foyer area of the stadium at 10.30pm this evening." NBC reports that officials suspect a suicide bomber is to blame for the incident. 
 
 Latest statement on incident at Manchester Arena pic.twitter.com/BEpLOan3dY — G M Police (@gmpolice) May 23, 2017 
 
 UPDATE 2: Manchester's regional counter terrorism unit is treating this as a possible terrorist incident, according to the BBC's Daniel Sandford. 
 
 The North West Counter Terrorism Unit is treating the incident at #ManchesterArena as a possible terrorist incident. — Daniel Sandford (@BBCDanielS) May 22, 2017 
 
 UPDATE 1: Greater Manchester Police have issued a statement that there have been a number of confirmed fatalities and others injured at Manchester Arena. An on-the-ground source tells Billboard at least 18 have been reported dead. 
 
 Police statement on incident at Manchester Arena pic.twitter.com/gaKASukx9a — G M Police (@gmpolice) May 22, 2017 
 
 Emergency services have rushed to the U.K.'s Manchester Arena where Ariana Grande had been performing Monday (May 22) after concertgoers claim two explosions were heard. 
 
 Billboard has confirmed Grande is "okay" with the singer's rep and that her team is further investigating what happened. Supporting act BIA confirmed she and her team were also "okay." 
 
 So far no official report has been issued, but people at the concert and in the surrounding area are posting on social media that there were two bangs and people running out of the 21,000-person capacity arena. 
 
 CNN spoke to one of the concertgoers, Kiera Dawber, immediately after she exited the arena. Dawber said she saw "at least" 20 dead, and didn't think it looked like the deaths were the result of a stampede. "There was a massive explosion, a bang, smoke coming through the steps…It was just chaos." 
 
 Going through corridors to exit the arena, Dawber described seeing "at least 20, 30 people on the floor. Just… dead. You could see they were passed away, some people with injuries. There was a guy holding what looked like his wife and she wasn't in a good state….There was blood and shoes and handbags and bits of food and phones….I don't think I'll ever get rid of the images." 
 
 One man captured video of an emergency vehicle racing to the scene. See it here: 
 
 Two loud bangs heard around Manchester arena. People running out of the arena. No idea what's going on pic.twitter.com/KaRzQckvEE — Alan Brennan (@alanbmufc92) May 22, 2017 
 
 Others shared video from from the frightening scene inside the arena: 
 
 EXPLOSION AT MANCHESTER ARENA AND EVERYONE RAN OUT SO SCARY-- pic.twitter.com/pJbUBoELtE — ♡♡ (@hannawwh) May 22, 2017 
 
 New video shows mass panic as fans flee Ariana Grande concert at the #Manchester Arena after 2 explosions.pic.twitter.com/gufS5r7tRj — Tennessee (@TEN_GOP) May 22, 2017 
 
 I was inside Ariana Grande's concert in Manchester Arena. Right at the end a explosion was heard. Smoke on the corridors and blood — Critico en serio (@criticoenserio) May 22, 2017 
 
 Wtf is happening in Manchester arena? Massive bang & everyone is running & screaming, people are crying — Rebecca B (@RebeccaBx) May 22, 2017 
 
 Network Rail has told Reuters U.K. and other outlets that all train lines out of the Manchester Victoria station are currently blocked with emergency services in attendance. Mancunians around the arena are offering to take in anyone stranded in the area with the hashtag #RoomforManchester on Twitter. 
 
 Local police are calling it a "serious incident" and asking people to stay away from the area. 
 
 Emergency services responding to serious incident at Manchester Arena. Avoid the area. More details will follow as soon as available — G M Police (@gmpolice) May 22, 2017 
 
 Greater Manchester is the United Kingdom's second-most populous urban area with a population of 2.55 million. 
 
 We will update as more details become available. ||||| Manchester, England (CNN) The UK raised its terrorism threat level to "critical" -- the highest level -- for the first time in a decade Tuesday. 
 
 Prime Minister Theresa May warned that intelligence services believe an attack may be "imminent." 
 
 Hours earlier, police identified 22-year-old Salman Abedi as the suspected suicide attacker who detonated a bomb as throngs of teenagers poured out of an Ariana Grande concert in Manchester, killing 22 people. 
 
 People hug near armed police who responded to the scene. 
 
 People hug near armed police who responded to the scene. 
 
 An injured man is helped at the scene. 
 
 An injured man is helped at the scene. 
 
 People sit outside near the arena. The crowd was made up of mainly younger people who had come to see Grande in her first of three scheduled concerts in the UK. 
 
 People sit outside near the arena. The crowd was made up of mainly younger people who had come to see Grande in her first of three scheduled concerts in the UK. 
 
 People are escorted away from the arena. 
 
 People are escorted away from the arena. 
 
 Greater Manchester Police tweeted that emergency services were "responding to (a) serious incident at Manchester Arena. Avoid the area. More details will follow as soon as available." 
 
 Greater Manchester Police tweeted that emergency services were "responding to (a) serious incident at Manchester Arena. Avoid the area. More details will follow as soon as available." 
 
 People receive medical attention at a railway station close to the arena. The incident happened shortly after Grande had left the stage, shortly after 10:30 p.m. (5:30 p.m. ET) according to eyewitnesses. Calvin Welsford, an 18-year-old concertgoer, said that he heard a "loud bang" a couple of minutes after Grande's set had finished. 
 
 People receive medical attention at a railway station close to the arena. The incident happened shortly after Grande had left the stage, shortly after 10:30 p.m. (5:30 p.m. ET) according to eyewitnesses. Calvin Welsford, an 18-year-old concertgoer, said that he heard a "loud bang" a couple of minutes after Grande's set had finished. 
 
 People gather outside the arena. "We can confirm there was an incident as people were leaving the Ariana Grande show last night," police said on Twitter early on Tuesday. "The incident took place outside the venue in a public space. Our thoughts and prayers go out to the victims." 
 
 People gather outside the arena. "We can confirm there was an incident as people were leaving the Ariana Grande show last night," police said on Twitter early on Tuesday. "The incident took place outside the venue in a public space. Our thoughts and prayers go out to the victims." 
 
 Police help someone after the attack at Manchester Arena on Monday, May 22. 
 
 Police help someone after the attack at Manchester Arena on Monday, May 22. 
 
 British Prime Minister Theresa May condemns the "callous terrorist attack" as she delivers a statement in London on May 23. 
 
 A forensics team works at the scene of the explosion on Tuesday, May 23. 
 
 A forensics team works at the scene of the explosion on Tuesday, May 23. 
 
 Women cry after placing flowers in Manchester on May 24. 
 
 Women cry after placing flowers in Manchester on May 24. 
 
 Police officers deliver flowers to a makeshift memorial in Manchester on Wednesday, May 24. 
 
 Police officers deliver flowers to a makeshift memorial in Manchester on Wednesday, May 24. 
 
 Local residents hold Manchester City and Manchester United soccer jerseys during the national minute of silence. 
 
 Local residents hold Manchester City and Manchester United soccer jerseys during the national minute of silence. 
 
 A Manchester road is closed off as police raids continued on May 25. 
 
 A Manchester road is closed off as police raids continued on May 25. 
 
 A women sheds tears after observing the minute of silence in St. Ann's Square. 
 
 A women sheds tears after observing the minute of silence in St. Ann's Square. 
 
 Flowers and tribute messages are left for victims in St. Ann's Square. 
 
 Flowers and tribute messages are left for victims in St. Ann's Square. 
 
 A police officer guards a house in Manchester as investigations continued on May 25. Police say a man carrying explosives acted as a lone attacker and died in the blast. 
 
 Britain's Queen Elizabeth II speaks to 15-year-old Millie Robson and her mother, Marie, during a visit to the Royal Manchester Children's Hospital on May 25. The Queen was visiting those injured in the attack. 
 
 People in Manchester, England, gather in St. Ann's Square on Thursday, May 25. They were observing a national minute of silence to remember the victims of a suicide bombing at an Ariana Grande concert. 
 
 Key developments 
 
 Police have carried out two raids in Manchester. 
 
 Queen Elizabeth II described bombing as "act of barbarity." 
 
 59 people injured, some in life-threatening situations. 
 
 US President Donald Trump slams attackers as "losers." 
 
 Ariana Grande suspends her world tour. 
 
 Lone attacker? 
 
 The suspect apparently acted as a lone attacker and died in the blast Monday night, police said, which left the wounded and the dead scattered across the arena's bloodied entrance and sent screaming girls running for cover. 
 
 The bombing has drawn condemnation and horror from around the world as a heinous assault targeting children. 
 
 Teen concertgoer Olivia Campbell, whose mother spoke to CNN during an agonizing wait for news from her daughter, is the latest victim to have been confirmed dead. 
 
 Fifteen-year-old Olivia had gone to the concert with her friend Adam to celebrate his birthday. She is one of four victims, including eight-year-old Saffie Rose Roussos , who have been identified. 
 
 Olivia Campbell, 15, had been confirmed as one of the dead. 
 
 While police believe Abedi acted alone, May warned that investigators could not discount the possible involvement of a "wider group" of terrorists. 
 
 The raising of the terror threat level means "not only that another attack remains highly likely but that a further attack may be imminent," she said. 
 
 It will enable the government to deploy armed military personnel of support of police and other security forces, particularly in the guarding of key sites, concerts and sporting events, May said. 
 
 Emergency crews evacuated victims at the Manchester Arena Monday night. 
 
 "I do not want the public to feel unduly alarmed," she said, calling the response "proportionate and sensible" to the threat level. 
 
 The blast marked the deadliest terror attack on British soil since the 2005 London bombings. 
 
 Claim of responsibility 
 
 ISIS claimed responsibility for the attack but offered no evidence. The terror group said on its Telegram channel Tuesday that a "soldier of the caliphate" was able to "plant explosive devices" at the arena, a US counterterrorism source told CNN. 
 
 ISIS routinely claims attacks it has no proven connection to. 
 
 Authorities have discovered no evidence of a link between the attacker and an established terror group, a British counterterrorism official told CNN. 
 
 A US counterterrorism official said bombing "looks much like" an ISIS attack but that American intelligence officials were working with British counterparts to determine more. 
 
 No determination has been made on the sophistication of the explosive device or what chemicals were involved, the official said. 
 
 Remembering the victims 
 
 "We will stand together to say that this city is greater than the force that aligns itself against it," David Walker, Bishop of Manchester, told the crowd. 
 
 "We are sending a signal not just to Manchester, but across the world that you can not defeat us because love in the end is always stronger than hate." 
 
 Saffie Rose Roussos, 8, was among those killed in the Manchester Arena attack. 
 
 Eight-year-old Saffie Rose Roussos from Leyland has been named as one of the fatalities, the Lancashire County Council confirmed. 
 
 Chris Upton, the head teacher at the Tarleton Community Primary School, described her as "simply a beautiful little girl" who was "quiet and unassuming with a creative flair." 
 
 Georgina Callander, 18, was also killed, according to her school, the Bishop Rawstorne Church of England Academy. 
 
 "All of our students will gather together today for a time of prayer and reflection and to give thanks for the life of Georgina," the school said. 
 
 At least 12 victims aged 16 or under were being treated at a children's hospital for serious injuries, some of them fighting for their lives, a Manchester health official said. 
 
 Grande, who had just finished the first of three scheduled UK performances, tweeted about her devastation several hours later: "broken. from the bottom of my heart, i am so so sorry. i don't have words." 
 
 broken. 
 
 from the bottom of my heart, i am so so sorry. i don't have words. — Ariana Grande (@ArianaGrande) May 23, 2017 
 
 The pop star has suspended her "Dangerous Woman" tour following the attack, a source with knowledge of the situation told CNN. Grande was scheduled to perform in London and across Europe through mid-June. 
 
 Queen Elizabeth II said Tuesday that "the whole nation has been shocked." 
 
 Around 400 police were deployed overnight following the attack, and on Tuesday, large groups of armed police were seen in several parts of the city. Security was boosted in London. 
 
 A poster from an Ariana Grande fan sits alongside flowers at Manchester's St Ann's Square. #manchesterattack A post shared by Bryony Jones (@bryonysjones) on May 23, 2017 at 7:40am PDT 
 
 Trump calls attackers 'losers' 
 
 JUST WATCHED Pres. Trump: Manchester attacked by losers Replay More Videos ... MUST WATCH Pres. Trump: Manchester attacked by losers 02:05 
 
 US President Donald Trump slammed the attack, saying that terrorists were "losers." 
 
 "So many young beautiful innocent people living and enjoying their lives murdered by evil losers in life. I won't call them monsters because they would like that term. They would think that's a great name. I will call them from now on losers because that's what they are," he said. "This wicked ideology must be obliterated." 
 
 The US Department of Homeland Security said it was "closely monitoring" the situation. ||||| Armed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of... (Associated Press) 
 
 Armed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative... (Associated Press) 
 
 MANCHESTER, England (AP) — The Latest on the blast at an Ariana Grande concert in northern England (all times local): 
 
 12:55 p.m. 
 
 The Islamic State group says one of its members planted bombs in the middle of crowds in Manchester, England, where 22 people died in an explosion. 
 
 Police, however, have spoken only of "an improvised device" used in the attack. 
 
 IS says "a soldier of the caliphate planted bombs in the middle of Crusaders gatherings" then detonated them. It did not say whether the attacker was killed. 
 
 The group claimed that "30 Crusaders were killed and 70 others were wounded," higher than the totals confirmed by authorities in Manchester. 
 
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 12:45 p.m. 
 
 A school in northern England has identified one of the victims in the Manchester concert bombing as Georgina Callander, a former pupil. 
 
 Peter Rawlinson, deputy of the Bishop Rawstorne Church of England Academy in Croston, northwest of Manchester, told The Associated Press that the school confirmed Callander's death with members of her family. 
 
 Rawlinson says "she was academically a very gifted student, very hard-working. Just lovely to speak to." 
 
 The school posted a photo of Georgina on its website, smiling and look smart in her school uniform. It said she died of injuries from the attack and described her as "a lovely young student who was very popular with her peers and the staff." 
 
 12:35 p.m. 
 
 U.S. Secretary of State Rex Tillerson says the U.S. is working closely with the British government as it investigates the bombing at an Ariana Grande concert in Manchester. 
 
 Tillerson released a statement Tuesday saying that "our hearts go out to the families of those who have lost loved ones and to those injured in the attack." 
 
 He says: "While it is too early to determine those responsible for this atrocity, we are working closely with the British government and supporting their efforts to investigate and respond to this attack." 
 
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 12:25 p.m. 
 
 Queen Elizabeth II has expressed her "deepest sympathy" to all those affected by Monday's bomb attack at a Manchester pop concert, where 22 people were killed. 
 
 In a statement issued Tuesday, the monarch said "the whole nation has been shocked by the death and injury". 
 
 She thanked police and the emergency services, and expressed admiration for the way the people of Manchester have responded to the attack: "With humanity and compassion to this act of barbarity." 
 
 Police say they have arrested a 23-year-old man in connection with the attack. Police say they have arrested a 23-year-old man in connection with the attack. 
 
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 12:01 p.m. 
 
 Greater Manchester Police say they have arrested a 23-year-old man in connection with the apparent suicide bombing at an Ariana Grande concert in the city. 
 
 Police say the man was arrested in south Manchester Tuesday, a day after the explosion killed 22 people and injured 59, many of them teenagers. 
 
 They did not provide details. 
 
 Police also said officials arrested a man at the Arndale shopping center in central Manchester — but that the arrest is not believed to be connected to Monday night's attack. 
 
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 11:50 a.m. 
 
 Italian Premier Paolo Gentiloni says efforts are underway so that this week's G-7 summit in Sicily will yield a stronger, common anti-terrorism commitment. 
 
 Condemning the bombing that killed 22 people in Manchester, England, Gentiloni told reporters Tuesday in Rome that the summit on Friday and Saturday provides the opportunity to insist that "the cowardliness that snuffs out the lives of young people won't get the better of our freedom." 
 
 He said Italians can count on the "dedication and professionalism" of their nation's security forces to ensure international events are carried out safely. 
 
 He says he planned to call British Prime Minister Theresa May to express "closeness, solidarity" to Britons. 
 
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 11:45 a.m. 
 
 Police have evacuated a large shopping center in Manchester, England. Police declined to comment on media reports that they have arrested a man there. 
 
 July McKenzie, who was shopping when the Arndale shopping center, said: "We were just in the shop and could hear people screaming and security guards telling everybody to get out." 
 
 Some people left the scene in tears, while others waited outside the mall. 
 
 The Arndale center was rebuilt after an IRA bombing in 1996. 
 
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 11:35 a.m. 
 
 Turkish officials say they "strongly condemn" the attack in Manchester and promised to work together with the United Kingdom against terror. President Recep Tayyip Erdogan says that Turkey "shares the pain of the state of England and the English people" in the attack that killed 22 people. 
 
 Turkey has been hit by a string of attacks blamed on the Islamic State group and Kurdish militants since 2015, killing at least 550 people. 
 
 ___ 
 
 11:15 a.m. 
 
 British Prime Minister Theresa May says that it is "beyond doubt" that Britain and the city of Manchester have fallen victim to "a callous terrorist attack." 
 
 Speaking outside her offices in London, she says "Although it is not the first time Manchester has suffered in this way, it is the worst attack the city has experienced, and the worst ever to hit the north of England." 
 
 May says police believe they know the attacker's identity but are not disclosing it immediately. 
 
 ___ 
 
 11:10 a.m. 
 
 British Prime Minister Theresa May says police and security staff in Manchester believe they know identity of the apparent suicide bomber who attacked people leaving an Ariana Grande concert Monday night, but they are not revealing the name for the time being. 
 
 Speaking in London, May said: "This attack stands out for its appalling, sickening cowardice." 
 
 She says the attack, in which 22 people died, was one of the worst the nation had suffered. 
 
 ___ 
 
 11:00 a.m. 
 
 Harun Khan, the secretary general of the Muslim Council of Britain, has joined the condemnations of the Manchester attack. 
 
 In a statement, Khan says: "This is horrific, this is criminal. May the perpetrators face the full weight of justice both in this life and the next." 
 
 He adds: "I urge all those in the region and around the country to pool together to support those affected." 
 
 ___ 
 
 10:55 a.m. 
 
 Finance ministers from the 28 European Union countries, including Britain's Philip Hammond, observed a minute's silence in memory of those killed and injured in the attack at an Ariana Grande concert in Manchester. 
 
 Ahead of the regular EU meeting of finance ministers, Hammond expressed his condolences to the victims and their families of "this barbaric attack" in Manchester. 
 
 "It is, as far as we know, a terrorist incident," he said. "We are treating it as such." 
 
 Hammond, who was due to speak at a panel in Brussels, is to return to London at the meeting's conclusion instead. 
 
 Flags are also flying at half-staff outside the European Commission in the heart of the Belgian capital. 
 
 ___ 
 
 10:40 a.m. 
 
 France's interior minister says the government will be issuing instructions Tuesday to regional administrators on working with event organizers on how to secure public spaces. 
 
 After a high-level security meeting in Paris Tuesday, Interior Minister Gerard Collomb said organizers of sports events, concerts and other performances already had a series of instructions on how to secure their venues. Collomb said France's airports have also been secured. 
 
 France has been on heightened alert since the Nov. 13, 2015, attacks that struck a concert, the national stadium and cafes and bars. 
 
 Early Tuesday, the Paris mayor's office said all shows and concerts scheduled in coming days are going ahead as planned. Ariana Grande is scheduled to perform in Paris on June 7. 
 
 ___ 
 
 10:30 a.m. 
 
 President Vladimir Putin says Russia is ready to boost anti-terror cooperation with Britain in the wake of a deadly explosion at an Ariana Grande concert in Manchester, England. 
 
 In Tuesday's telegram to British Prime Minister Theresa May, Putin offered condolences over what he called a "cynical, inhuman crime" and wishes for a quick recovery of all those hurt. 
 
 Putin reaffirmed Russia's readiness to "expand anti-terror cooperation with British partners, both on bilateral level and within the framework of broad international efforts." 
 
 Britain and other NATO allies have cut cooperation with Moscow on fighting terrorism over Russia's annexation of Ukraine's Crimean Peninsula and support for a pro-Russia insurgency in eastern Ukraine. 
 
 Manchester police say an apparent suicide bomber set off an explosive device at the end of the concert, killing 22 people. 
 
 ___ 
 
 10:15 a.m. 
 
 Former Manchester United soccer star David Beckham posted on Facebook: "As a father & a human what has happened truly saddens me. My thoughts are with all of those that have been affected by this tragedy." 
 
 In targeting Manchester, the attacker struck at one of Britain's cultural hearts. The once gritty industrial city, with London and Liverpool, has been one of the main cultural influences on modern Britain, with its iconic Manchester United football team, its cross-city rival City and chart-toppers Oasis, The Smiths and other globally famous bands. Oasis singer Liam Gallagher tweeted that he is "in total shock and absolutely devastated." 
 
 Peter Hook of Manchester bands New Order and Joy Division tweeted that his daughter "made it home safe" from the Ariana Grande concert and added: My heart goes out to all parents & those involved. Manchester stay strong." 
 
 ___ 
 
 10:05 a.m. 
 
 Palestinian President Mahmoud Abbas has denounced the "ugly terrorist attack" in Manchester, speaking after a West Bank meeting with President Donald Trump. Abbas says he is sending his condolences to the British prime minister, the British people and the families of the victims. 
 
 Both Trump and the Palestinian leader opened their remarks with a condemnation of the attack in which 22 people were killed by a bomb blast during a concert in the city in northern England. 
 
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 9:15 a.m. 
 
 President Donald Trump is expressing solidarity with the United Kingdom in the wake of a deadly explosion at an Ariana Grande concert in Manchester, England, condemning the "evil losers" behind the blast. 
 
 Trump spoke Tuesday after a meeting in Bethlehem with Palestinian Authority President Mahmoud Abbas (mahk-MOOD' ah-BAHS'). 
 
 Manchester police say an apparent suicide bomber set off an improvised explosive device at the end of the concert, killing 22 people. 
 
 Trump says the attack preyed on "innocent children." He says this "wicked ideology must be obliterated. And I mean completely obliterated." 
 
 Manchester police so far have said nothing about the attacker's identity or possible motivation. 
 
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 9:00 a.m. 
 
 Social media users are helping the desperate hunt for people missing in the Manchester concert bombing by circulating names and photos with the MissingInManchester hashtag. 
 
 The city's regional government and its mayor, Andy Burnham, were among scores of Twitter users that circulated the hashtag to help people seeking missing family members and friends. 
 
 Those named as missing included Olivia Campbell. Her mother, Charlotte Campbell, said the 15-year-old attended the Ariana Grande concert with a friend from school who has since been found and is being treated in a hospital. But Olivia is missing, having last called home just before the concert, the mother told ITV television's Good Morning Britain breakfast show. 
 
 She says: "I've called the hospitals. I've called all the places, the hotels where people said that children have been taken and I've called the police. If anyone sees Olivia, lend her your phone, she knows my number." 
 
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 8:45 a.m. 
 
 A Czech woman who was at the Ariana Grande concert in Manchester says that "there was almost no security check, rather zero. They let us get in without any check if we have anything with us." 
 
 Nikola Trochtova told the Czech public radio that "the only thing they were interested in was if we had any bottles of water with us. They almost didn't check our bags, they didn't take a look." 
 
 She says she was leaving the venue when she heard an explosion at the entrance, but learned the details only after returning to her hotel. 
 
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 8:35 a.m. 
 
 German Chancellor Angela Merkel says it's "incomprehensible" that someone would target a pop concert to kill and wound people. 
 
 Merkel said in a statement Tuesday that the attack at an Ariana Grande concert in Manchester "will only strengthen our determination to keep acting together with our British friends against those who plan and carry out such inhuman deeds." 
 
 She added: "I assure people in Britain that Germany stands beside you." 
 
 ___ 
 
 8:20 a.m. 
 
 European Commission President Jean-Claude Juncker says Europe is mourning with Britain after a bomb killed 22 people at a concert in Manchester. 
 
 Juncker said in a statement Tuesday that "today we mourn with you. Tomorrow we will work side by side with you to fight back against those who seek to destroy our way of life." 
 
 He adds: "It breaks my heart to think that, once again, terrorism has sought to instill fear where there should be joy, to sow division where young people and families should be coming together in celebration." 
 
 ___ 
 
 8:10 a.m. 
 
 NATO's chief is expressing solidarity with Britain after a bomb attack in Manchester killed 22 people, just as leaders of the military alliance prepare to meet to discuss counter-terrorism. 
 
 Secretary-General Jens Stoltenberg said in a tweet Tuesday that "NATO stands with the U.K. in the fight against terrorism." He also said his thoughts were with all those affect by the "barbaric" attack. 
 
 President Donald Trump and other NATO leaders at to gather in Brussels on Thursday to discuss ways the military alliance can do more against terrorism. 
 
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 8:00 a.m. 
 
 The German government is offering condolences to Britain after the deadly explosion at an Ariana Grande concert in Manchester. 
 
 Foreign Minister Sigmar Gabriel wrote Tuesday on Twitter: "Terrible news from Manchester! Our thoughts are now with our British friends. United we stand." 
 
 Chancellor Angela Merkel's spokesman, Steffen Seibert, tweeted: "Our thoughts (and) prayers are with the people in #Manchester affected by the blast. We mourn for the dead (and) hope the injured can recover fully." 
 
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 7:45 a.m. 
 
 France's government is offering sympathy and solidarity following the bombing at an Ariana Grande concert in Manchester which killed 22 people. 
 
 In a statement, French President Emmanuel Macron said France would continue to work with Britain to fight terrorism. Macron said he would speak with British Prime Minister Theresa May to stay abreast of developments. 
 
 Paris Mayor Anne Hidalgo also expressed solidarity. 
 
 Paris has grim experience with the type of attack that struck Britain, after multiple Islamic State attackers struck a concert hall, the national stadium and cafes and bars on Nov. 13, 2015, killing 130 people. 
 
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 7:30 a.m. 
 
 The White House says President Donald Trump is being provided updates on the Manchester concert explosion by his national security team. 
 
 Trump is in the midst of his first overseas trip as president. He's meeting Tuesday in Bethlehem with Palestinian Authority President Mahmoud Abbas and speaking at Yad Vashem, the Holocaust memorial in Jerusalem. 
 
 His spokesman Sean Spicer provided the update on Twitter. 
 
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 7:20 a.m. 
 
 Manchester police say an apparent suicide bomber set off an improvised explosive device at the end of an Ariana Grande concert. 
 
 Police raised the death toll to 22 early Tuesday, and dozens more have been reported injured. 
 
 Chief Constable Ian Hopkins says forensic investigations are continuing to determine if the attacker had accomplices. He provided no information about the individual who detonated the device. 
 
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 7:10 a.m. 
 
 Greater Manchester Police have raised the death toll in a blast at an Ariana Grande concert to 22. 
 
 The force's chief constable, Ian Hopkins, said Tuesday they believe one person carried out the attack. Police are trying to determine if the person acted alone or had support in the Monday night blast. 
 
 Police say some 400 officers were deployed overnight to help with the investigation. 
 
 Officials say children are among the victims. 
 
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 7 a.m. 
 
 Police say they are treating an explosion at an Ariana Grande concert in northern England as terrorism. Greater Manchester Police says the blast killed at least 19 people, and the ambulance service says 59 people have been taken to hospitals. 
 
 Greater Manchester Police Chief Constable Ian Hopkins says police are treating the blast as an act of terrorism "until we know otherwise." 
 
 There was panic after the explosion, which struck around 10:30 p.m. (2130 GMT) Monday night as Grande was ending the concert. 
 
 Grande, who was not injured, tweeted hours later: "Broken. From the bottom of my heart, I am so so sorry. I don't have words." 
 
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 6 a.m. 
 
 Labour Party leader Jeremy Corbyn says he and Prime Minister Theresa May have agreed to suspend election campaigning until further notice. 
 
 Corbyn said Tuesday he is "horrified" by the events in Manchester and that his thoughts are with the families and friends of those who have died and been injured. 
 
 Campaign events ahead of the June 8 general election will now be put on hold as Britain comes to grips with the incident and its aftermath. 
 
 Corbyn says he had spoken with May after the explosion. 
 
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 5:45 a.m. 
 
 Australia's prime minister has told the Australian Parliament that the deadly explosion at Manchester Arena appeared to be a "brutal attack on young people everywhere." 
 
 Prime Minister Malcolm Turnbull said the British were treating the blast that killed at least 19 people and injured more than 50 as a terrorist attack, although its cause was unknown. 
 
 Turnbull says: "This incident, this attack, is especially vile, especially criminal, especially horrific because it appears to have been deliberately directed at teenagers." 
 
 In Tokyo, a spokesman for the Japanese government condemned the attack. 
 
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 4 a.m. 
 
 Campaigning has been suspended in Britain's national election after a deadly explosion at Manchester Arena. 
 
 Prime Minister Theresa May canceled campaign events Tuesday after the blast, which killed at least 19 people and injured more than 50. She is due to chair a meeting of the government's emergency committee, COBRA, later. 
 
 Liberal Democrat leader Tim Farron canceled a campaign tour to Gibraltar after the explosion. 
 
 Britons are due to go to the polls on June 8. 
 
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 3:45 a.m. 
 
 A number of Manchester taxi services offered free rides to people stranded by the incident. 
 
 The taxi companies posted messages about the free rides on Twitter after an explosion at Manchester Arena after an Ariana Grande concert Monday night. The blast killed 19 people and injured dozens more. 
 
 The service could also be used by people trying to get to local hospitals to look for loved ones. 
 
 In addition some city residents opened their homes to provide overnight lodging for people who were stranded by the shutdown in some train services because of the incident. 
 
 City officials said the true spirit of Manchester was surfacing in the hours after the incident. 
 
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 3:35 a.m. 
 
 The Department of Homeland Security says there is no evidence of credible threats against music venues in the U.S., as England reels from an explosion at an Ariana Grande concert late Monday. 
 
 The department says the U.S. public may experience increased security in and around public places and events. 
 
 DHS says it is closely monitoring the situation at Manchester Arena and working with U.K. officials to obtain additional information about the cause of the explosion. 
 
 The government is urging U.S. citizens in Manchester to heed directions from local authorities and be vigilant about their security. 
 
 The explosion killed at least 19 people and injured dozens. Police say they are treating as a terrorist attack. 
 
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 3:20 a.m. 
 
 Frantic loved ones of young people missing after an explosion at an Ariana Grande concert have taken to Twitter and Instagram with their photos and pleas for help. 
 
 Many Manchester residents responded early Tuesday with offers of shelter and details on locations where displaced concert-goers had been taken in. 
 
 The 23-year-old Grande, true to her youthful fan base, is a social media phenomenon with 105 million followers on Instagram and 45.6 million followers on Twitter. Her fans, proud "Arianators," were among those who took to Twitter with prayers and tears. 
 
 Fellow stars offered condolences as well. 
 
 Taylor Swift tweeted, "My thoughts, prayers and tears for all those affected by the Manchester tragedy tonight. I'm sending all my love." 
 
 Ellie Goulding, Cher (fresh from a big night at the Billboard Awards) and Katy Perry were among others to tweet their support. ||||| MANCHESTER, England — Children were among the 22 people killed in a suicide attack after an Ariana Grande concert at Britain's Manchester Arena, police confirmed Tuesday. 
 
 Meanwhile, authorities identified the suicide bomber responsible for the carnage as 22-year-old Salman Abedi and warned angry residents against any reprisals. 
 
 "We understand that feelings are very raw right now and people are looking for answers," Manchester Police Chief Constable Ian Hopkins said. "We will not tolerate hate towards any parts of our community." 
 
 Police also arrested a 23-year-old man in Manchester in connection with the attack. 
 
 Abedi had a British passport, sources told NBC News, but it was not immediately clear where he was born. He was killed when he detonated an improvised explosive device near one of the venue's exits at 10:33 p.m. local time Monday, officials said. 
 
 The pop star's fan base is primarily girls and teenagers, so the venue was packed full of families. 
 
 While Hopkins did not identify any of the dead, 8-year-old Saffie Rose Roussos' death was confirmed by her school. 
 
 Some 59 other people were wounded, including some who suffered life-threatening injuries, officials said. 
 
 And thousands of grieving Manchester residents were expected to attend a vigil at 6 p.m. local time Tuesday to remember the victims. 
 
 ISIS claimed responsibility for the attack but provided no evidence and neither U.S. nor British officials have corroborated that. 
 
 The blast sparked a nightlong search for loved ones as frantic parents tried to locate their children, and groups of friends scattered by the explosion sought each other. 
 
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 Video shot inside the 21,000-capacity venue showed terrified teenagers screaming as they made their way out amid a sea of pink balloons. Some fans were still wearing the singer and former Nickelodeon TV actress' trademark kitten ears as they fled. 
 
 "We have been treating this as a terrorist incident," Greater Manchester Police Chief Constable Ian Hopkins told reporters. "Our priority is to establish whether he was acting alone or as part of a network." 
 
 Rohit Kachroo, security editor for NBC News' U.K. partner ITV News, reported that nuts and bolts were spotted in the arena's foyer but police would not comment on whether victims had suffered wounds from shrapnel. 
 
 “ When it exploded, it just rocked your whole body” 
 
 Police said the explosion took place outside the arena catching people as they exited, also triggering chaos inside the venue. U.S. officials said initial reports indicated that some of the injuries might have been caused by a stampede of concertgoers. 
 
 Nicola Murray, who was at the concert with her 12-year-old daughter Olivia, told NBC News that she witnessed "a red-orange-looking flash" and heard an "incredibly loud bang." 
 
 "Within seconds, as you can imagine, it was chaos and people were panicking and running to try and get out the door," she said. "We were getting swept with the people crushing to get out and I was terrified my daughter would get crushed. At one point, she was getting dragged away from me but I managed to pull her into me and force her in front of me while trying to direct her to the door and down the steps.” 
 
 Murray, who had traveled to the concert from the Scottish town of Hamilton, said the area outside the venue was "full of people who were completely traumatized — kids and adults alike all crying, screaming, some still running away ... adults in cars who were due to be picking up kids screaming trying to find them." 
 
 The scene after a suicide bombing in the foyer of the Manchester Arena on Monday. PA Wire/PA Images 
 
 Alison Pritchard, 34, who works as a waitress, recalled hearing "an almighty explosion behind us." 
 
 Her friend Carole Taylor, a 49-year-old teacher, told NBC News she turned around to see "this plume of smoke coming over and all this sort of debris and embers floating from the roof." 
 
 "When it exploded, it just rocked your whole body," she said. "It went right through us. People started screaming." 
 
 Related: A 'Very Horrified City' Embraces Kindness After Concert Attack 
 
 Steve Rotheram, the mayor of Liverpool, told NBC News his two daughters and two nieces were at the show. They described "pandemonium" at the scene with "people climbing over seats to get to exits [and] obviously there were a lot of young girls so there was a lot of screaming and panic," he said. 
 
 However, Rotheram's four relatives managed to escape safely. 
 
 Hopkins, the police chief, confirmed that children were among the dead and warned of "difficult days ahead." 
 
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 British Prime Minister Theresa May said the terrorist set out "to cause maximum carnage and kill and injure indiscriminately." 
 
 She added: "This attacks stands out for its appalling, sickening cowardice — deliberately targeting innocent and defenseless young people who should have been enjoying one of the most memorable nights of their lives.” 
 
 Related: Rock Legend's Daughter 'Safe' After Concert Carnage 
 
 Police said emergency services received 240 calls after the incident and victims were taken to eight hospitals. At least a dozen people aged under 16 were hospitalized. 
 
 Jon Rouse, a local health official, said the wounded included "a number of individuals who have very, very serious injuries ... and people who are going to be in hospital for a long time." 
 
 Ariana Grande performs at Madison Square Garden in New York on Feb. 23. Kevin Mazur / Getty Images for Republic Record 
 
 Grande, 23, tweeted early Tuesday: "broken. from the bottom of my heart, i am so so sorry. i don't have words." 
 
 In a statement, the pop star's manager Scooter Braun thanked first responders "who rushed towards danger to help save lives." 
 
 He added: "We ask all of you to hold the victims, their families and all those affected in your hearts and prayers." 
 
 Bianca Landrau, the Boston hip-hop star known as Bia, who also performed, tweeted: "Guys we are okay!!!" 
 
 And singer Victoria Monét, the opening act, said in a statement that she was safe but "heartbroken that loved ones who came to have the night of their lives ended up losing them." 
 
 "I wish I could say that I am OK, but I am not," she wrote, adding: "Please send all your prayers up high for Manchester." 
 
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 Britain's terrorist threat level stands at "severe," the second-highest rung on a five-point scale, meaning an attack is highly likely. 
 
 White House Press Secretary Sean Spicer said President Donald Trump's national security team was keeping him up to date while he is in Israel. 
 
 Speaking after meeting with Palestinian leader Mahmoud Abbas in Bethlehem on Tuesday, Trump blamed "evil losers" for the attack, adding that he won't call terrorists "monsters" as "they'd think that's a great name." 
 
 He added: "We cannot stand for a moment longer for the slaughter of innocent people." 
 
 The Department of Homeland Security stressed that there was no information to indicate a specific credible threat involving U.S. music venues. 
 
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 Manchester Arena, which opened in 1995, is one of the largest indoor venues in Europe. More than 1 million people fill its seats every year. It is located near the Manchester Victoria transit station. 
 
 Local families offered beds for the night to people who had been affected by the explosion, and taxis provided free rides. 
 
 Before you speculate about those Muslims again, Muslim cabbies and taxi drivers giving free lifts to get ppl safe #Manchester — A.Wajid (@w47id) May 22, 2017 
 
 Manchester Muslim doctors working through the night, Manchester Muslim taxi drivers taking people home for free. You don't know Manchester. https://t.co/C8yXe7u0jw — Glenn Kitson (@Glenn_Kitson) May 23, 2017 
 
 A statement issued by Muslim organizations in the Manchester area said the community was “saddened and horrified" by the attack. 
 
 It added: “The perpetrators, whoever they may be, must bear the full consequences of their actions.” 
 
 This was Britain's deadliest terrorist attack since four suicide bombers killed 52 London commuters on three subway trains and a bus in July 2005. 
 
 Manchester is located 160 miles northwest of London. It was hit by a huge Irish Republican Army bomb in 1996 that leveled a swath of the city center. More than 200 people were injured in that attack, though no one was killed. 
 
 Came down to the postbox which was the last thing standing after the IRA bomb in 96.Manchester cordoned off again for the city's darkest day pic.twitter.com/YToPZtnghv — Will Perry (@willperryTV) May 23, 2017 
 
 Alexander Smith reported from Manchester. Eoghan Macguire and Jason Cumming reported from London. Alex Johnson reported from Los Angeles.
– Police say an explosion at an Ariana Grande concert in northern England has killed at least 19 people and injured about 50, the AP reports. Billboard has confirmed that the American singer herself is OK. Police suspect a suicide bomber set off the blast, which is being treated as a terrorist attack unless new information emerges, NBC News reports. A statement from Manchester Arena said the explosion took place outside the arena just after the concert, as people were exiting. "A huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena," concertgoer Majid Khan, 22, tells Britain's Press Association. "It was one bang and essentially everyone from the other side of the arena where the bang was heard from suddenly came running towards us as they were trying to exit." Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons. Authorities say most of those being taken to the hospital had shrapnel injuries. "Praying for everyone at Ariana Grande's show," tweeted Katy Perry, one of the many celebs taking to Twitter to voice support, per CBS News. Britain's terrorist threat level has been set at "severe" in recent years, indicating an attack is highly likely. Reuters reports Manchester Arena is the biggest indoor arena in all of Europe, and can hold 21,000. The concert was part of the 23-year-old Grande's Dangerous Woman Tour. After Manchester, Grande was to perform at venues in Belgium, Poland, Germany, Switzerland, and France, with concerts in Latin America and Asia to follow.