At least seven people were killed when Boko Haram jihadists attacked a camp for people displaced by the conflict in northeast Nigeria, militia members and locals said on Saturday.
The attack on Friday evening in Ngala, near the border with Cameroon, came as two people were killed in an explosion outside another camp in the Borno state capital, Maiduguri.
In Ngala, a civilian militia member, Umar Kachalla, said jihadists in two pick-up trucks fired a rocket-propelled grenade at the camp, which houses some 80 000 people.
"They (Boko Haram) fired an RPG into the camp from behind the fire fence, killing seven people and injuring several others," he told AFP from the neighbouring town of Gamboru.
The attack, which happened at about 1900 GMT, was followed by sustained gunfire as the jihadists drove away into the darkness, he added.