At least 11 persons were killed on Thursday night as suicide bombers attacked Maiduguri, the Borno state capital, witnesses and security sources said.
Nine suicide bombers were among the dead.
Multiple explosions echoed across the city at about 11 p.m. on Thursday as three female suicide bombers detonated their explosive belts near Muna Garage, a popular bus station that has suffered many of such attacks in recent times.
The explosions killed two residents, witnesses said. But police said only the suicide bombers were killed in the attack.
Several commercial vehicles that were on queue for a trip to the border areas the next day were also razed in the explosion.