source: Undisclosed Source
actor1: Islamic State (West Africa) - Lake Chad Faction
actor2: Military Forces of Nigeria (2015-)
location: Mandafuma
notes: On 7 October 2021, ISWAP claimed a clash with Nigerian troops and CJTF militia in Mandafuma (Biu, Borno); according to the claim, one CJTF member was killed and the troops fled.