A hospital official said at least 143 people died in the attacks Friday. The count included some bodies already claimed by families for immediate burial per Islamic law.
Other bodies could be lying at other clinics and hospitals in the city.
In a statement issued Saturday, federal police spokesman Olusola Amore said attackers targeted five police buildings, two immigration offices and the local headquarters of the State Security Service, Nigeria’s secret police.
State authorities declared a 24-hour curfew late Friday as residents hid inside their homes amid the fighting.
A Boko Haram spokesman using the nom de guerre Abul-Qaqa claimed responsibility for the attacks in a message to journalists. He said the attack came as the state government refused to release Boko Haram members held by the police.