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.

Three people were killed and another 10 were injured in an overnight shooting involving multiple gunmen at a Brooklyn nightclub, police said Sunday. The dead were identified by the New York Police Department on Sunday night as Marvin St. Louis, 19, of Brooklyn; Amadou Diallo, 27, of Upper Manhattan; and Jamel Childs, 35, of Brooklyn.

A fatal Crown Heights shooting prompted New York City mayoral candidates to clash over crime policies as city grapples with recent surge in gun violence incidents.

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.