source: Vanguard (Nigeria)
actor1: Military Forces of Nigeria (2015-)
actor2: Islamic State (West Africa) - Lake Chad Faction
location: Gudumbali
notes: On 11 January 2020, Nigerian Air Force conducted an air strike against an ISWAP camp and killed a high ranked commander of the group in Tumbun Sabon, near Lake Chad (no location found, coded as Gudumbali (Guzamala, Borno)).