source: Vanguard (Nigeria)
actor1: Gujba Communal Militia (Nigeria)
actor2: Islamic State (West Africa) and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
location: Gujba
notes: On 20 May 2018, Gujba local militias prevented a Boko Haram suicide bomber from executing an attack on a local mosque.