source: Nigeria Punch
actor1: Islamic State (West Africa) - Lake Chad Faction
actor2: Military Forces of Nigeria (2015-)
location: Gubio
notes: On 12 September; Boko Haram (Barnawi - coded as ISWAP) attacked Gubio (Borno) and engaged in a gun battle with NAF and CJTF. Six soldiers and one CJTF fighter was killed.