Tunisian security take up position after gunmen took hostages near the country’s parliament, in Tunis on March 18, 2015.

Twenty five people have been killed in Tunis on Wednesday at its famed National Bardo Museum, which is located next to the countries parliament. The majority of those killed were British, Japanese, French, Italian and Colombian foreigners.

The Islamic State (IS) has since claimed that it was behind the attack on the museum. Video footage has been released showing what appears to be two gunmen carrying assault rifles and bags entering the museum and have been identified as Yassine Laabidi and Hatem Khachnaoui. The two men were later killed in a gunfight by the security guards of the building. It is said Laabidi and Khachnaoui were trained in Libya in an area controlled by IS.

Tunisian troops have now arrested over twenty people in association with the attack, ten of which are allegedly directly involved in the event. The sister and father of one of the gunmen, Khachnaoui have been arrested in their home in Sbiba City however authorities have declined to disclose how they were involved.

It has now come to light that there was a third gunman involved when originally there were two. He is said to have fled but President Beji Caid Essebsi has stated that, “he will not get far”. This news comes from further analysis of the surveillance cameras surrounding the Bardo Museum.

President Beji Caid Essebsi has also added that a monument will be placed outside the museum in memory of those who were viciously killed.