source: Undisclosed Source
actor1: Islamic State (West Africa) - Lake Chad Faction and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Civilians (Cameroon)
location: Gouderi
notes: On 31 December 2021, Boko Haram fighters killed one person during an attack at Gouderi village, Kolofata subdivision (Mayo-Sava, Extreme-Nord).