Three people are dead, and nine others injured after police say several gunmen opened fire inside a nightclub in Brooklyn early Sunday morning.

Two of the three people killed in a bar shooting in the New York City borough of Brooklyn were among the four shooters who opened fire inside the building.

The New York City mayor's race candidates honed in on fighting crime and prostitution after the mass shooting took quality of life issues front and center.

Around four shooters opened fire at a New York City restaurant early Sunday, resulting in three deaths and eight injuries. According to police, the violence is gang-related.

Police say the officer was standing outside a residential building near West 173rd Street and Amsterdam Avenue around 9:45 p.m. when two men approached him on separate mopeds.

An off-duty police officer fatally shot a 30-year-old man in Washington Heights Sunday night, after the man allegedly showed a weapon, according to the NYPD.