IS commander 'killed in Libya'
Islamic State says one of its prominent field commanders has been killed in fighting in Libya.
The extremist group said Ahmed al-Ruwaysi , also known as Abu Zakariya al-Tunisi, was killed in clashes in the Libyan city of Sirte.
The 166th Battalion, a militia loyal to the unelected and self-proclaimed Libyan government in Tripoli, is fighting to seize control of Sirte from IS's Libyan affiliate.
Libya's elected and internationally recognised parliament has been forced from the capital and meets in the eastern city of Tobruk.
Al-Tunisi, according to the IS eulogy, planned and participated in the 2013 assassinations of two prominent left-wing Tunisian politicians, Mohammed Brahmi and Chokri Belaid.