Boko Haram, officially known as Jama'at Ahl al-Sunna li al-Da'wa wa al-Jihad and sometimes referred to as its state name Daular Musulunci, is a self-proclaimed jihadist militant group based in northeastern Nigeria and also active in Chad, Niger, northern Cameroon, and Mali. In 2016, the group split, resulting in the emergence of a hostile faction known as the Islamic State's West Africa Province.