Police : Insurgents attack a police training school in Borno for the third time this year . Thirty-five Nigerian policemen are missing following an insurgent attack Saturday on a police training school in one of the most volatile parts of the African nation , police said . A search - and - rescue effort is launched for the injured students . Northeast Nigeria has been beset by violence .
Police : Insurgents attack a police training school in Borno for the third time this year . A search - and - rescue effort is launched for the injured students . Northeast Nigeria has been beset by violence .