actor1: Rioters (Nigeria)
actor2: Islamic State (West Africa)
notes: On 5 April 2015, residents stopped and killed a suspected Boko Haram suicide bomber attempting to enter a mosque in Biu city (Borno). Another suspected bomber was also assaulted by another group of locals at a second location in the city.
target_text: actor1: Rioters (Nigeria), actor2: Islamic State (West Africa)