actor1: Police Forces of Nigeria (1999-2015)
actor2: Unidentified Armed Group (Nigeria)
notes: Police forces thwart a car bomb explosion during the morning hours, a day after a bombing killed four people in an area of the city attacked repeatedly by Boko Haram.
target_text: actor1: Police Forces of Nigeria (1999-2015), actor2: Unidentified Armed Group (Nigeria)