The National Emergency Management Agency (NEMA) announced on Monday that at least 48 people have been killed and 91 others wounded by a bomb explosion at a mosque in the northern Nigerian city of Maiduguri.
The explosion came a day after the army clashed with Boko Haram fighters west of Maiduguri and around Lake Chad.
There was no claim of responsibility for the blast but the incident appears to one of the typical Boko Haram attacks.
Meanwhile, the Nigerian Army repelled an attack on Sunday by suspected Boko Haram fighters on the village of Aldawari near to Maiduguri city in Borno.
Gun shots and explosions were heard in the evening outside Maiduguri during the clashes between the Nigerian Army and Boko Haram.
At least seven people died in the fighting according to resident and military sources.
Musa Abdukadir, a resident, claimed that after the mosque attack he counted 50 dead bodies at the state hospital in Maiduguri. Medics had told him more bodies had been moved to two other hospitals. The number included victims from Sunday's casualties.
"We all fled yesterday as our houses were on fire. This morning we came back, and while we were counting the people who had burned in the houses, another bomb exploded," stated Ibrahim Goni, a resident who said he had been at the scene of the incident.
Boko Haram has reverted to a strategy of attacking soft targets such as markets, bus stations and places of worship, and also using hit-and-run tactics during its attacks on villages, generally in the Borno state.
Niger, Chad and Cameroon are also suffering from the spillover of Boko Haram’s insurgency, which is based in the northern Nigerian states of Borno, Yobe and Adamawa.
In the past six years, some 17,000 people have been killed, mostly in Nigeria by the militant group, while its insurgency has caused around 2.1 million people to flee the area.