source: UN (unspecified); L'Oeil
actor1: Islamic State (West Africa) - Lake Chad Faction and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Civilians (Cameroon)
location: Blangoua
notes: 25 May. Boko Haram members attack civilians on the island of Boram on Lake Chad in Blangoua. 1 civilian is killed and several injured.