source: AFP; Telegram
actor1: Islamic State (West Africa) and/or Boko Haram - Jamaatu Ahli is-Sunnah lid-Dawati wal-Jihad
actor2: Military Forces of Nigeria (2015-)
location: Gambaru
notes: On 14 December 2018, a military patrol hit an IED near Gambaru (an area where Boko Haram is active). One soldier (some sources indicate two) was killed and some others were injured.