source: Desert Herald; Premium Times (Nigeria); HumAngle; Inside Arewa (Nigeria); Daily Independent (Nigeria); This Day (Nigeria); Daily Post (Nigeria); New Telegraph; Sahara Reporters; Guardian (Nigeria); CKN Nigeria; The Cable (Nigeria); Nigeria Punch
actor1: Islamic State (West Africa) - Lake Chad Faction and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Military Forces of Nigeria (2015-)
location: Waijroko
notes: On 20 September 2020, Boko Haram militants ambushed the Nigerian army at Waijroko (Damboa LGA, Borno), killing four soldiers including a colonel.