Attacks on two banks and two police stations left 16 people dead Thursday in the northeastern Nigerian town of Gombi, a local official said, amid a wave of such violence blamed on Islamists. "Sixteen people were killed in all following attacks by gunmen on two police stations and two banks," local government chairman Ahmad Isa Hassan said. "The attackers were armed with explosives and automatic rifles with which they attacked their targets ... For now we suspect the attackers were armed robbers."