A few days before the attacks in Monguno and Nganzai, eighty-one people were killed in a massacre in Gubio by ISWAP on 9 June.

[2] The attack was one of the deadliest attacks in recent years by Boko Haram, and was perpetrated by Abu Musab al-Barnawi, who had recently split off from Boko Haram to form the Islamic State – West Africa Province (ISWAP).

[2] The first attack began in Goni Usmanti, Nganzai LGA, with ISWAP fighters shooting at residents as they entered the city.

[3] The jihadists fled Goni Usmanti when they sighted a convoy of Nigerian troops from Gubio, and attacked the village of Mainmari while retreating.

[8] The Nigerian military released a statement claiming to have successfully repelled the Monguno attack and killed twenty jihadists.