article_snippet: terror attack was the worst of terror attack kind in Tunisia for 13 years.
article_snippet: On Sunday the Tunisian government confirmed that terror chief Khaled Chaieb, also known as Abou Sakhr Lokman, was killed overnight in an operation in the Gafsa region near the Algerian border.
article_snippet: After the attack ISIS based in Iraq and Syria claimed responsibility.
article_snippet: Tunisian fighters make up a disproportionately high number of foreign recruits to ISIS in Syria, with as many as 10,000 having signed up.
article_snippet: At one point, Tunisian fighters encounter another man with a backpack walking down a flight of stairs.
article_snippet: Tunisian fighters briefly acknowledge each other and let another man walk free before unleashing the deadly attack in the Bardo National Museum in Tunis.
article_snippet: The lack of security at the countryhas since been called into question and the brutality has led to large scale solidarity protests in Tunis, both at the weekend and in the immediate aftermath of the attack.
article_snippet: Several people were arrested by Tunisian security forces after the attacks.
highlights_snippet: Tunisian forces claim Tunisian forces have  killed three perpetrators of terror attack .