actor1: Unidentified Armed Group (Nigeria)
actor2: Police Forces of Nigeria (1999-2015)
notes: The Borno State police command has confirmed the death of three persons in a bomb explosion which occurred in Maiduguri on the 20th April. Those who died included two police officers responding to an emergency call whose vehicle ran over a planted bomb intended to disrupt emergency response.
target_text: actor1: Unidentified Armed Group (Nigeria), actor2: Police Forces of Nigeria (1999-2015)