The Tunisian ministry released a picture on its Facebook page which reportedly shows the leader of Okba Ibn Nafaa Brigade Lokmane Abou Sakhr . A gunman who is suspected of being involved in the terror attack on foreign tourists at a Tunisian museum is believed to have been killed in an armed raid . Prime Minister Habib Essid has told state news agency TAP that Khaled Chaieb , also known as Abou Sakhr Lokman , was killed overnight in an operation in the Gafsa region near the Algerian border . Chaieb is believed to be a prominent militant in al-Qaida 's North African arm and is described as one of Tunisia 's 'most dangerous terrorists . ' He was one of nine armed militants killed in an operation on Saturday evening . Chaieb is suspected of leading or helping lead the March 18 attack on the National Bardo Museum which saw 21 people , mostly foreign tourists gunned down . Police killed two of the gunmen who are said to be Tunisians in their 20s , who had trained in Libya . Security officials have claimed the militants were members of the Okba Ibn Nafaa Brigade , a jihadist group . Authorities have arrested several people in connection with the attack - dubbed the worst in Tunisia in 13 years . CCTV footage of the shooting shows the gunmen roaming free around the museum . The lack of security at the country 's largest museum has since been called into question . The news comes as tens of thousands of Tunisians marched through the capital Tunis in a solidarity protest today . French President Francois Hollande confirmed yesterday that Huguette Dupeu had died from her injuries following the attack . Mr Hollande and Italian Prime Minister Matteo Renzi and several foreign ministers and officials from other countries are joining an anti-terrorism ceremony in Tunis after the march . The Tunisian government called on all major political parties to join the march from the seat of government at Bab Es-Saadoun to the museum . News of Sakhr 's death was announced as tens of thousands of people marched through Tunisia . People from the World Social Forum gathered today to denounce terror attacks in the capital Tunis . The international visitors are showing solidarity with Tunisia , whose fragile new democracy was deeply shaken by the museum attack , for which ISIS claimed responsibility . Fighters from Tunisia make up a disproportionately high number of foreign recruits to ISIS in Syria , with as many as 10,000 having signed up . ISIS issued a statement and audio on jihadi websites applauding the dead gunmen as 'knights ' for their 'blessed invasion of one of the dens of infidels and vice in Muslim Tunisia ' . CCTV images shows the terrorist attack on the National Bardo Museum in Tunisia earlier this month . Tunisian protesters took to the streets across the region following the attack . Authorities are struggling with scattered extremist violence linked to various radical Islamic groups , largely linked to neighboring countries Algeria or Libya . Interior Ministry spokesman Ali Aroui said Sunday that nine suspected `` terrorists '' were killed when security forces clashed with the suspects in the southwest region of Sidi Aich , near the Algerian border . He said several extremists were wounded in another clash in the northwest region of Kef , as part of security operations around the country ahead of the march .
Gunmen killed 21 people in attack on National Bardo Museum in Libya . Two were killed by police and third is now believed to have been killed . Abou Sakhr Lokman is one of nine people killed in overnight armed raid . He is believed to have been involved in museum terror attack that saw foreign tourists killed and was one of Libya 's 'most dangerous terrorists '