Amnesty claims Boko Haram killings have doubled in five months, many using girl suicide bombers

Boko Haram extremists have killed more than 380 people in the Lake Chad region since April, a major resurgence of attacks that has doubled the casualties compared with the previous five months, Amnesty International said.

The spike in attacks by the Nigeria-based Islamic militants is a result of increased use of suicide bombers, often women and girls, who target highly populated areas in Cameroon's Far North region and Nigeria's Borno and Adamawa states, the rights group said.