Dozens of people died and more than 30 injured on Friday when a suicide bomber attacked police headquarters in Maiduguri, the capital and largest city of Borno State in Nigeria, said a hospital official.
Baala Hassan, Borno State police chief, said the attack that occurred at the gate of the headquarters killed seven policemen, about 10 civilians and injured nine other civilians claiming that the officials downplayed casulty figures in the past.
No group claimed responsibility for Friday’s attacks, but Boko Haram is predicted to carry out the attack due to its similar attacks in the past.
On the hand, Nigerian army said on Friday the troops killed more than 10 suspected Boko Haram militants on Thursday night when they allegedly rushed back an attack on Shtimari town in northeastern Borno state.
Two of the militants were suicide bombers, said the army.
Defence Ministry spokesperson Chris Olukolade said that a large cache of arms was regained.
He added at least 25 people were killed after a suicide bomber blew himself up at a major marketplace in Yola town of northeastern Adamawa state late on Thursday night. In addition to that, suicide attacks in Maiduguri, the capital and largest city of Borno, and in neighbouring Yola left at least 31 people dead.
"Meanwhile, the offensive operations in Sambisa and other forest enclaves of the terrorists are continuing with intelligence activities, aerial surveillance and highly coordinated air bombardment backed by ground assaults," he continued.
The numbers given by the army couldn’t be confirmed by independent sources.
The United Nations called on Nigeria's President Muhammadu Buhari, who was sworn in a week ago, to investigate reports of the crimes by Boko Haram rebels and alleged mistreatments by the army on Friday.
Boko Haram has been fighting a six-year insurgency in a bid to establish a state of its own in northern Nigeria and in the process has killed thousands of people and caused about 1.5 million to flee their homes.