New York - Four people were killed and three others were wounded early Saturday in a shooting at an illegal gambling club in New York City, police said. The six men and one woman were shot just before 7 a.m. inside a building in the Crown Heights neighborhood of Brooklyn.

A sign on the building where the bloodshed occurred says Triple A Aces. Chief of Detectives Dermot Shea said there was "evidence of gambling" including cards and dice inside.

The gambling operation was unlicensed but police had not previously received any complaints about the location, Chief of Patrol Rodney Harrison said.

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Shea said four men were dead at the scene and the others were taken to hospitals with injuries that were not life-threatening. The victims, who have not been identified, ranged in age from 32 to 49, Shea said at a briefing near the shooting. Two may have lived out of state and the rest were from neighborhoods throughout Brooklyn, Shea added.

One additional person was injured fleeing. Police said earlier that five were wounded.

No arrests have been made, and police do not know the motive for the shootings, Shea said. He said two guns were found at the scene and more could potentially be found. It is estimated that 15 shots were fired.

The shooting was the second mass killing in New York in a week in a city that has seen a marked drop in homicides in recent years. Four homeless men were beaten to death by another homeless man Oct. 5 in the Chinatown neighborhood. In 2000, there were more than 600 homicides in the city. Last year, there were fewer than 300.