Three explosions rocked a mosque and the area near the building in the northeastern Nigerian city of Maiduguri and killed at least 54 people, injuring 90 others, a military spokesman said on Sunday
"A suspected Boko Haram suicide bomber detonated IEDs [improvised explosive devices] at a mosque in Ajilari and some insurgents also threw IEDs at a viewing centre. Total casualty figure is now 54," Victor Isuku, a police spokesman in Maiduguri, said.
"Although details are not clear, it is important to note the attacks signify high level of desperation on the part of the Boko Haram terrorists," he added.
Bubakar Aliyu, a farmer who had just finished praying at a smaller mosque said, "I heard the first blast from the main mosque ... another exploded at a cluster of shops. I ran back to home and as I approached my house I heard another blast."
There was no immediate claim of responsibility for the explosions but there is an ongoing investigation.
Maiduguri which is the capital city of the Borno State in northeastern Nigeria has been struggling with the Boko Haram insurgency, Boko Haram has been fighting in northeastern Nigeria to carve out their own state since 2009.
More than 15,000 people have lost their lives so far due to the attacks of the militant group.