A mass shooting overnight at a club in Brooklyn left three people dead and another nine wounded, police officials and the mayor said Sunday morning.

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.

Police are searching for up to four gunmen after a Brooklyn nightclub shooting left 3 dead and 10 injured in what investigators believe was gang-related.

Martin St. Louis died in the Sunday gunfight he started when he fired at Folk Nation gang member Jamel Childs, 35, according to police.

A shooting in Brooklyn left several people wounded early Sunday, according to the New York City Police Department. At approximately 3:27 a.m., officers responded to a report of shots fired at 903 Franklin Avenue, according to the NYPD. Upon arrival, police discovered multiple people suffering from gunshot wounds inside the location.

Within minutes, officers arrived at 903 Franklin Avenue, finding that nine men and three women, ranging in age from 19 to 61, had been shot. Three men died. One man, 19, was pronounced dead at the scene. Two other men, 27 and 35, were critically wounded and succumbed to their injuries at the hospital.

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.

Wilky Vladimil Toribio Perez was shot in the left shoulder on Pine St. near Etna St. in Cypress Hills around 2:25 a.m. Aug. 10, police said.