source: Undisclosed Source
actor1: Islamic State (West Africa) - Lake Chad Faction
actor2: Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
location: Banki
notes: On 23 December 2021, ISWAP and JAS faction Boko Haram militants clashed due to disagreements over surrendered fighters in Baduwa and Kote communities, 6km from Banki (Bama, Borno). Members were asked by the ISWAP to surrender, but were prevented from doing so by the JAS faction. Heavy casualties were reported on the Boko Haram-JAS side. Unknown fatalities coded as 10.