A Long Beach man faces 20 years in prison after admitting to fatally shooting another man at a party at a public housing complex in the city in 2014, prosecutors said Tuesday.

Antonio Webb, 24, pleaded guilty Monday to first-degree manslaughter and second-degree criminal possession of a weapon in front of acting Supreme Court Justice Teresa Corrigan. He is scheduled for sentencing on May 17.

Webb admitted to shooting Tyrenzo Brown, 28, also of Long Beach, at a party at the Channel Park Homes near Birch Court on Sept. 27, 2014.

Authorities said the shooting followed an altercation between Webb and a friend of Brown’s over a woman and said Webb fired a pistol “several times” into a group of partygoers — striking Brown “multiple times,” killing him.

Webb, who fled the scene, was arrested on Oct. 1, 2014.

“This defendant recklessly shot into a crowd of people and stole the life on an innocent 28-year-old,” Nassau County District Attorney Madeline Singas said Tuesday in a statement. “We hope this plea will help the family of Tyrenzo Brown as they grieve the senseless murder of this young man.”

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Following the arrest, Brown’s mother, Sandra Hodge, said it was painful to see her son’s alleged killer in court — and said that the two families knew each other from the neighborhood. “We’re letting the law ... handle it,” she said. “But we’re hurting a lot. Every day we suffer.”

At the time of the shooting, family members said Brown worked in construction and had two daughters.

With Bridget Murphy