New York City police officers are outraged after a parole board released a Muslim cop killer.

Shu'aib Raheem was convicted in the 1973 murder of Stephen Gilroy. The 29-year-old officer was shot during a botched robbery and hostage standoff at a Brooklyn sporting goods store. He was released from the New York's Dept. of Corrections on July 2.

"What the hell were they thinking," said Patricia Gilroy, the officer's widow, in an interview with New York Daily News.

In 2008 Raheem said he regretted his role in the deadly siege that left several hostages wounded. "I'm not an animal," he said in remarks quoted by the newspaper. "Believe me, I regret that day and will regret it the rest of my life. I understand the pain I caused."

His release sparked condemnation from NYPD Commissioner Raymond Kelly and Pat Lynch, the head of the Patrolmen's Benevolent Association.

"Every New York City police officer is outraged," he told FOX News Radio. "He killed a New York City police officer in cold blood. It's an absolute disgrace to take this sub-human and allow him to walk the streets of this state or any state."

The parole board voted 2-1 to release Raheem. Transcripts have not been released so it's unclear why he was set free. Regardless, Lynch said the board made the wrong decision.

"You can't take that type of evil out of a man," he said. "They made the wrong decision and we have to live with the consequences."

The New York State Division of Parole told FOX News Radio Raheem was released to an address in Manhattan. He will be required to check in with his parole officer once a week.

Todd Starnes is a FOX News Radio reporter and author.