"We have 25 dead from yesterday's attacks in Ganye which included a chief prison warder, a policeman and a prominent politician, " Adamawastate police chief Mohammed Ibrahim was quoted by AFP news agency as saying.
BBC: Nigerian town of Ganye hit by deadly attacks
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The move is in conjunction with the country's state of emergency in Borno, Yobe and Adamawa states, and it is intended to end insurgent activities.
CNN: 'Massive' numbers of Nigerian troops target insurgents
3.
Last week, President Goodluck Jonathan declared a state of emergency in three north-eastern states - Borno, Adamawa, and Yobe - after a series of deadly attacks by militant groups.