No one has been arrested over the shooting, which took place in Brooklyn, and the motive and exact circumstances are not known, a New York police official said.
Four killed in US bar shooting: police
The local affiliate of ABC News described the place where the shooting took place as an after-hours club.
Four men were pronounced dead at the scene, while two other men and a woman suffered non life threatening injuries, the police official said. Earlier reports had said as many as five people were wounded.
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