Three women suicide bombers blew themselves up at the entrance to a camp for displaced people in northeastern Nigeria on Tuesday, killing 28 people and wounding 82, local sources said.

The attack took place in the town of Mandarari, 25 kilometres (15 miles) from Maiduguri, the capital of Borno state, said Baba Kura, a member of a vigilante force set up to fight jihadists.