(CNN)--Bomb blasts struck at least three churches in Nigeria on Sunday as worshippers were attending Christmas Day services, stirring memories of strikes against Nigerian churches during last year's Christmas season.
The first explosion struck near a Catholic church in Madala, west of Abuja, Nigeria's capital, the National Emergency Management Agency said.
The agency said there were at least 17 bodies in the morgue at the National Hospital, and officials were still trying to confirm the total number of dead, local journalist Alkasim Abdulkadir said from Abuja.
A second attack struck the Mountain of Fire Ministries church in the city of Jos, northeast of the capital, said journalist Hassan John, who witnessed the aftermath of the two blasts that targeted the church.
No one was killed in the bombing, which John called a "miracle," but a policeman who engaged the attackers in a gun battle died of his wounds later, the journalist said, citing officials.
Another wave of bombings hit the northern town of Damaturu in Yobe state, an aid worker said, asking not to be named for security reasons.
A church, a police station and a state security building were also bombed, the aid worker said, saying there were injuries but it was not clear how many(Keep reading).