Tunisian Prime Minister Habib Essid has fired a number of police commanders after last week’s deadly attack on a museum in the capital, his spokesman said on Monday.

Among those sacked were the security chief for the Tunis region, local police chiefs and the director of tourist security, Mofdi Mseddi told dpa.

The measure came after Essid on Sunday visited the Bardo national museum in Tunis, where suspected Islamist gunmen shot dead 20 foreign tourists and a policeman, Mseddi added.

President Beji Caid Essibsi on Sunday admitted that there had been shortcomings in security at the museum, which shares an entrance with the country’s parliament building.

Gunmen on Wednesday opened fire on tourists outside the museum before taking hostages inside the building. Two gunmen were killed by police and a third escaped.

It was the deadliest militant attack in Tunisia since a revolution deposed dictator Zine Abidine Ben Ali in 2011.

An audio message purporting to be a claim of responsibility by the Islamic State extremist group was published online after the attack.

The military said overnight that a soldier was killed and three others injured when their vehicle hit a land mine during operations against jihadists in the western Kef region.

Jihadists groups linked to al-Qaeda are active in mountainous regions of western Tunisia near the Algerian border. SAPA