Image copyright AP Image caption Protesters lit candles and prayed at the gate of the museum 
 
 Image copyright AP Image caption Security was stepped up across Tunis, including at the museum 
 
 Many Tunisians took to the streets of central Tunis to protest against the attack, waving flags and lighting candles outside the museum.  Tunisia’s presidency says four arrests have been made in connection with the attack as civil society groups call for silent demonstration on Thursday 
 
 More protests against the deadly attack at Tunisia’s Bardo national museum are planned for Thursday, as the prime minister said one of the two gunmen was known to security services. Moncef Hamdoun, an official with the Charles Nicolle hospital where many victims were taken, said seven of the dead remain unidentified. Authorities say scores of people are dead after... (Associated Press) 
 
 Said Aidi said Thursday that five Tunisians were killed, including the two gunmen. The dead include: 
 
 At least three Tunisians, including a police officer involved in the security operation 
 
 Five Japanese were killed, according to Mr Essid - although Japan says it has only confirmed the deaths of three citizens 
 
 Four Italians 
 
 Two Colombians 
 
 Two Spaniards 
 
 One national each from the UK, Australia, France and Poland 
 
 Survivors' stories 
 
 Image copyright AFP Image caption The area outside the museum is still covered in blood stains from the attack 
 
 At the time of the attack, deputies in the neighbouring parliament building were discussing anti-terrorism legislation.
– "We are in a war with terror, and these savage minority groups will not frighten us," Tunisia's President Beji Caid Essebsi vowed in the wake of a terrorist attack that has now killed 18 foreign tourists and three Tunisians, plus the two gunmen. "The fight against them will continue until they are exterminated," he said in a speech last night, per the Guardian. He promised that "democracy will win and it will survive" as large numbers of demonstrators gathered in Tunis to protest the attack, reports Reuters. Meanwhile, ISIS militants today claimed responsibility for the attack, reports the BBC. But in a bright spot, two Spanish tourists who hid in the museum all night have now been found safe; Juan Carlos Sanchez tells the AP that "we thought the terrorists were still outside. But it was simply the police who were searching for people." Cristina Rubio is four months pregnant; both are fine. In other developments: Prime Minister Habib Essi says one of the two gunmen, Yassine Laabidi, was known to authorities, but security services were unaware of links to militant groups, the BBC reports. Both gunmen were killed by security forces, and authorities say they're still hunting several accomplices. Tunisia has now detained a total of nine people. Officials say tourists from Japan, Italy, Colombia, Australia, France, Poland, and Spain were killed in the attack, according to the BBC. Poland, which has sent a plane with doctors to help treat the injured, says two of its citizens were killed, two are missing, and nine are among the 40 or so wounded, the AP reports. Tunisia, birthplace of the Arab Spring, is the "Arab world's most successful democracy," which may have made it more of a target, but there are fears the attack could lead to greater authoritarianism, reports the New York Times. ISIS supporters are praising the attack online, as per the Times. The Telegraph reports that Tunisian media are speculating that Ahmed al-Rouissi, the country's most-wanted terrorist, may be involved. The Tunisian government says he became a senior ISIS leader in Libya and was killed in fighting last weekend. Tunisian officials have speculated that the adjacent Parliament building may have been the attackers' initial target, and that they may have switched to the museum because it had less security, the New York Times reports.