source: Defense Post
actor1: Islamic State (West Africa) - Lake Chad Faction
actor2: Military Forces of Nigeria (2015-)
location: Kimba
notes: On 26 April 2019, ISWAP militants attacked a base of Nigerian Military Forces in Mararrabar Kimba (Biu, Borno). The militants overran the base and seized weapons. Five soldiers were killed and 30 are missing.