source: Vanguard (Nigeria)
actor1: Military Forces of Nigeria (2015-)
actor2: Islamic State (West Africa) and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
location: Bama
notes: 29 May, on or before. 40 members of Boko Haram surrender in Bama LGA and 70 in Monguno, Borno state. Exact date not clear.