source: Daily Trust (Nigeria)
actor1: Islamic State (West Africa) and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Civilians (Nigeria)
location: Mafa
notes: 21 June. Boko Haram attacks a group of local farmers in Mafa of Borno State, beheading 3 and leaving 13 others with gunshot wounds.