People from the North-West and South-West provinces, which used to be a part of British Cameroons, have the highest proportion of Protestants. The French-speaking regions of the southern and western regions are largely Catholic. Southern ethnic groups predominantly follow Christian or traditional African animist beliefs, or a syncretic combination of the two. People widely believe in witchcraft, and the government outlaws such practices. Suspected witches are often subject to mob violence. The Islamist jihadist group Ansar al-Islam has been reported as operating in North Cameroon.