source: Daily Trust (Nigeria); Nigeria Punch; Daily Post (Nigeria); Vanguard (Nigeria)
actor1: Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Civilians (Nigeria)
location: Mussa
notes: Around 9 December 2019, presumed Boko Haram (JAS) fighters attacked Mussa village in Askira-Uba LGA (Askira/Uba, Borno).