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: Damboa
notes: Boko Haram ambushed a group of soldiers travelling between Damboa and Biu, killing two and injuring others.