Three suspected female suicide bombers Wednesday morning killed themselves and a member of the local vigilante group known as Civilian JTF.
Witnesses said as the suspects were passing by the Civilian JTF at Galberi village 9 kilometers from Maiduguri, they were asked to stop checking. But they refused.
As one of the vigilantes approached them, they detonated their explosives killing themselves and the vigilante near them.
Five other vigilante got injured in the process.