Formerly Ansar Bait al-Maqdis (Supporters of the Holy House)
Operates primarily in North Sinai, Egypt.
Began marketing itself as an Islamic State affiliate, Wilayat Sinai (Province of Sinai), in November 2014.
Has carried out attacks against Egyptian military personnel and civilians. Claimed responsibility for Oct. 31, 2015 downing of a Russian jet in central Sinai.