Armed groups have killed at least 160 people in central Nigeria in a series of attacks on villages, local government officials said on Monday. "As many as 113 persons have been confirmed killed as Saturday hostilities persisted to early hours of Monday," Monday Kassah, head of the local government in Bokkos, Plateau State, told AFP. Military gangs, locally called "bandits", launched "well-coordinated" attacks in "not fewer than 20 different communities" and torched houses, Kassah said.