NEW YORK (AP) – A gun battle in a Harlem restaurant ended with a 25-year-old man dead and a plainclothes police officer wounded in the abdomen and ankle, police said Wednesday.

Plainclothes officer Robert Tejada, 35, of the 25th Precinct, was with three fellow officers when they responded to a 911 call at about 9:30 p.m. Tuesday night of a man with a gun at Cafe 22 in Harlem, police said.

When the officers entered the restaurant, the man opened fire on them, police said. One or more of the officers returned fire, killing the man, police said. It was unclear who fired the fatal shot or how many bullets were unloaded by either the man or the officers.

Police Commissioner Ray Kelly visited the wounded officer at New York-Presbyterian Hospital. “Obviously we’re very concerned about his condition,” he said.

A caravan of police cars, with lights flashing, made their way to the hospital, with officers offering to donate blood for their injured peer.

Police were investigating what caused the shooting.

“I heard like six shots,” said Ronnie Ramon, who lives at the building where the officer was shot, in Wednesday’s edition of the Daily News. “I looked out the window when I heard all the shots and I just saw cops out there.”

A man reached by telephone early Wednesday morning at Cafe 22 said no one was available to comment about the shooting.

In a separate incident in Brooklyn on Tuesday night, two police officers were slashed, one in the head and one in the hand while confronting a man, police said.