source: Blueprint; HumAngle
actor1: Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Islamic State (West Africa) - Lake Chad Faction
location: Sambisa Forest Reserve
notes: On 19 May 2021, ISWAP and Boko Haram fighters clashed following an IED attack at Sambisa Forest Reserve (Gwoza LGA, Borno). Fatalities were reported, including the death of Boko Haram's overall commander, Abubakar Shekau. Unknown fatalities coded as 10.