Baghdad, Iraq (CNN) -- Iraqi security forces stormed a Catholic church Sunday where gunmen suspected of having ties to al Qaeda were holding worshippers hostage, ending an hours-long standoff, police officials said Sunday.
Thirty-seven people were killed in the operation, including hostages, kidnappers and security workers, they said. At least seven of the victims were hostages, police officials said, while another 57 were wounded.
Eight suspects were arrested.
"All the marks point out that this incident carries the fingerprints of al Qaeda," Iraqi Defense Minister Abdul Qader Obeidi said on state television Sunday.
He said that most of the hostages were killed or wounded when the kidnappers set off explosives inside the church.
An American military spokesman said that as many as 10 hostages died and that between 20 and 30 people were injured in the operation. Seven Iraqi security workers and between five and seven "enemy" were also killed, said Lt. Col. Eric Bloom.
Survivors of the ordeal said they were about to begin Sunday night services when the gunmen entered the church, according to Martin Chulov, a journalist for the U.K.-based Guardian newspaper who was on the scene. About 50 people were inside the church at the time, and a priest ushered them into a back room, Chulov reported survivors said.
The U.S. military spokesman said that as many as 120 people were taken hostage.
CNN