source: Twitter; HumAngle; PR Nigeria; Undisclosed Source; Daily Post (Nigeria)
actor1: Islamic State (West Africa) - Lake Chad Faction
actor2: Military Forces of Nigeria (2015-)
location: Malam Fatori
notes: On 23 September 2021, military forces of Nigeria repelled an attack by ISWAP militants at a military base in Malam Fatori (Abadan, Borno). Casualties unknown.