Colorado movie theater shooting: at least 12 dead - live updates 9.41am ET / 2.41am BST: My colleagues in London have put together a video of some of the footage around the shooting. The images show police responding to the 911 calls, and eyewitness accounts from the scene: 9.32am ET / 2.32pm BST: President Obama will respond to the Aurora shooting in a speech at Fort Myers, Florida, at 11.20am ET, a spokeswoman has confirmed. Obama is in Florida on the election campaign. Obama issued remarks from Palm Beach this morning. The president had planned to visit Orlando, but cancelled the trip in the wake of the shootings. 9.23am ET / 2.23pm BST: Here's a summary of what we know so far: At least 12 people have been killed, and more injured, after a man walked into a movie theatre in Aurora, Denver, and opened fire. The incident happened just after midnight local time, at Century 16 theatre in the Aurora neighbourhood of Denver, where people were watching a late-night screening of the Batman film The Dark Knight Rises. Reports suggest the man used a gas-type device in the theatre before shooting. The suspect, named by police as James Holmes, 24, is in police custody. He was detained close to the movie theatre, apparently carrying a knife, a rifle and a handgun. The suspect was wearing a bulletproof vest, said police spokesman Frank Fania, but "did not resist" when arrested. Another gun was recovered from the theatre. President Barack Obama said he was "saddened by the horrific and tragic shooting in Colorado." "We are committed to bringing whoever was responsible to justice, ensuring the safety of our people, and caring for those who have been wounded," Obama said. He said his administration would do "everything we can to support the people of Aurora in this extraordinarily difficult time." Reports suggest children were among those injured. A six-year-old is said to be receiving treatment at Denver Children's hospital. Eyewitnesses say bullets from the shooting in theatre nine passed through the theatre walls into adjacent screens, injuring people there also. Injured people are being treated in six hospitals around Denver. 9.09am ET / 2.09pm BST: Warner Bros has released a statement saying it is "deeply saddened" by the shooting. Warner Bros is deeply saddened to learn about this shocking incident. We extend our sincere sympathies to the families and loved ones of the victims at this tragic time," the statement said. Warner Bros has cancelled the Dark Knight Rises premiere that was set to take place in Paris tonight, according to the Hollywood Reporter. The studio has also cancelled interviews that had been set to take place with the film's cast. 9.05am ET / 2.05pm BST: My colleague Paddy Allen has produced this Google map showing where the shooting took place: 8.45am ET / 1.45pm BST: The suspect in the Aurora shootings has been named as James Holmes, 24. Quoting federal law enforcement officials, AP said Holmes is now in police custody. The FBI said there is no indication that the incident is tied to any terrorist groups. 8.41am ET / 1.41pm BST: Aurora police spokesman Frank Fania said that 10 of the victims died in the theater and two died in the hospital. Fania said that the suspect was carrying a knife, a rifle and a handgun when arrested, and one other gun was recovered from the theater. The gunman was also wearing a bulletproof vest. "He did not resist, he did not put up a fight," Fania said. Police said the suspect's apartment building had been evacuated and police were looking for explosives there after the suspect made statements about explosives in his residence. Fania said police received the first call about the shooting at 12.39am local time and responded within "a minute or two." 8.26am ET / 1.26pm BST: Natalie Tejeda, a traffic reporter for KENS TV in San Antonio, says her friend Jessica Ghawi is among those killed in Aurora. "My friend Jessica Ghawi was killed in the #Aurora Shooting-she was an aspiring sportscaster-she will be missed," Tejeda wrote on Twitter. 8.17am ET / 1.17pm BST: The Guardian's team in New York is now taking over this live coverage. 1.06pm BST/ 6.06am MT: Republican presidential candidate Mitt Romney and his wife Ann have also expressed their sadness over the events in Aurora. In a statement released from Boston, where Romney is due to campaign later today, he said: "Ann and I are deeply saddened by the news of the senseless violence that took the lives of 15 people in Colorado and injured dozens more. We are praying for the families and loved ones of the victims during this time of deep shock and immense grief. We expect that the person responsible for this terrible crime will be quickly brought to justice. The Children's Hospital in Aurora, Colorado. Photograph: Craig F. Walker/AP 1.04pm BST / 6:04am MT: Local news channels are reporting that the number of dead appears to have been revised down to 12 from 14. 1pm BST/ 6am MT: Stringer and local Denver resident Laura Standley has filed this from the scene: Police cars and emergency vehicles are just beginning to leave as the sun comes up around 5.30am in Aurora, but the alarm continues to sound from the Century 16 theatre. Area residents are wandering over having heard the news of the shooting at their neighbourhood theatre. Christine Doan, 24, is one such resident. She said she came down because she heard some of the victims were children. In fact, talking about it brought her to tears. "Lives were lost here," she said. This is a serious event for (Aurora). Doan says the news is shocking, despite comparing it to a shooting at this very mall which resulted in a curfew for teenagers on Fridays and Saturday nights. Jojo Perez, 30, another resident in this north Aurora neighbourhood mirrors these sentiments. "That could have been us in there." she said. 12.16pm BST / 5.16am MT: President Barack Obama has issued this statement: Michelle and I are shocked and saddened by the horrific and tragic shooting in Colorado. Federal and local law enforcement are still responding, and my Administration will do everything that we can to support the people of Aurora in this extraordinarily difficult time. We are committed to bringing whoever was responsible to justice, ensuring the safety of our people, and caring for those who have been wounded. As we do when confronted by moments of darkness and challenge, we must now come together as one American family. All of us must have the people of Aurora in our thoughts and prayers as they confront the loss of family, friends, and neighbors, and we must stand together with them in the challenging hours and days to come. 12.06pm BST / 5.06am MT: Here's what a witness on Channel Nine TV said about the shooting: Smoke took over the entire theatre and no one could really see anything. Me and my sister and my friends were wondering what was going on, what was happening and then at that point I saw something coming through the wall. Multiple objects just float through the wall. I saw holes in the walls [from theatre nine]. He added that people were getting hit in his own theatre by what was happening next door: People stood up and started checking themselves. A couple of people where holding areas and I heard moaning like they were in pain. That's when I started to get worried. And I didn't really know what was happening until someone came up to the left entrance and told us we shouldn't go outside because there was a guy with a gun outside. 12.03pm BST / 5.03am MT: Denver police scanners report that they are preparing to send in Hazmat (Hazardous materials) teams to the residence in North Aurora. 12.01pm BST / 5.01am MDT: Local TV station Channel Nine is reporting that the shooting was so aggressive that bullets went through the walls of theatre nine and hit people in theatre eight. 11.53am BST / 4.53am MT: Denver University hospital is reporting that they are treating three people for "chemical exposure." 11.49am/ 4.49am MT Reddit have this witness report on their front page: Boyfriend and I have evacuated safe and sound. The shooting began during a gunfight scene in the movie, and at first, we thought it was special effects when smoke rose up. When shots happened again and people began to run, we thought something was up. A guy ran in and shouted there was a gunman in the building, and the alarms to emergency evacuate started to go off. I now know what tear gas feels like. I've never had to 'get down' with a police officer screaming at us. This is the most fucked up night of my short life. Police have said that the suspected shooter was wearing a gas mask so if this witness is correct then it wasn't simply a smoke bomb that was thrown into the cinema but perhaps something even more toxic. 11.39am BST/ 04:39am MDT: Police chief Dan Oates added this during the press briefing: On behalf of all Aurora, this is a horrific event. We have mobilised the witnesses that we could get our hands on to an area high school where de-briefings are under way. The FBI said they have agents working in the area and that they were asking to talking to potential witnesses. During questions Oates said he could add anything more about what the suspected shooter said "The only I will tell you is that he made a statement to us about explosives in his residence" and added that police were dealing with that. About the suspected smoke bomb which was released in the theatre before the shooting he said, " There was a releases of some kind of smoke." 11.25am BST/ 4.25am MT: The Denver Children's Hospital is reporting that the youngest person they're treating for bullett injuries is aged six. 11.21am BST/ 4.21am MT: Here's some of the first half of a short press briefing from local police chief Dan Oates. At the start of the briefing he confirmed that a 24-year-old male had been arrested and was in custody: As of now we only know of one gunman and we have noi evidence of any additional shooters. Police officers responded and found the gunman in the back of the theatre outside in the parking lot in his car in possesison of a gas mask and at least a rifle and a hand gun. The shooting went on for some time as. We have approximately 50 injured and 14 dead. 10 dead in the theatre and four died at the area hospital. The police response consisted of any one who was bleeding into police cars into hospitals....There may be some double counts. The suspect is in custody and made statements about possible explosive in his residence. At this time there is a residence in a North Aurora apartment building which has been evacuated and we are searching for explosive inside there. We are also concerned about explosives in the parking lot as it is [currently] sealed off. 11.14am/ 4.14am MT: Local Denver station Channel 9 has broadcast some footage taken by what appears to be someone inside the theatre after the shooting began. It is grainy but shows some of the chaos after the shooting happened. 10.55am BST / 3.55am MT: We can't verify this at the moment but @dingos8myTARDIS who we understand lives in Denver, tweeted this around the time of the shooting: 10.53am BST/3.53am MDT: Here is the latest update from the Associated Press: Witness Hayden Miller told KUSA-TV that he was inside Theater 16 and heard several shots. "Like little explosions going on and shortly after that we heard people screaming," he told the station. Hayden said at first he thought it was part of a louder movie next door. But then he saw "people hunched over leaving [the] theater." Spokeswoman Nicole Williams said that two people in critical condition had been rushed to the nearby Swedish Medical Center. She said emergency crews told her staff to prepare for several more patients from the shooting scene. "We're on standby to receive," she said. Police said they could have as many as 20 or more (patients). Police said there was 'no evidence' of a second shooter. Photograph: Karl Gehring/AP 10.41am BST/3.41am MDT: A press conference in Denver has just ended with the police chief of Aurora and a representative from the FBI who have given us some more salient information. Speaking was police chief Dan Oates, who said in summary that there was "no evidence" of a second shooter and that the suspected shooter was now in custody. Police had been told by the alleged shooter that there were explosives at his flat in North Aurora, a poorer suburb of Denver. This apartment block has now been evacuated and searched. The wounded which total 50 - though this Oates said could be higher because of double counting, have been taken to six hostpitals around the city. 10 people were killed at the cinema, where something appearing to be a smoke bomb was released before the attack at the screening of the 'Dark Knight Rises' at the Century multiplex. The alleged killer was found soon after with a rifle and another weapon. The next full press conference is expected eight hours from now at 11am local Denver time. We also have a stringer who is on her way to the scene. I will post up the quotes from the press conference shortly. 10.36am BST/3.36am MDT A masked gunman has shot at 14 people dead and up to 50 injured at a showing of the new Batman movie The Dark Knight Rises at a cinema in the US city of Denver, police said. The situation is developing quickly and we will bring you the latest information as it happens. Here is our initial report on the incident.