NEW YORK (AP) — A club shooting in the New York City borough of Brooklyn early Sunday left three people dead and nine others wounded in a year of record low gun violence in the city.

Investigators believe up to four shooters opened fire at Taste of the City Lounge in Crown Heights after a dispute just before 3:30 a.m. The violence appeared to be gang-related, Police Commissioner Jessica Tisch told reporters.

There were no immediate arrests. At a news briefing, Tisch called the killings “a tragic, senseless act of violence.”

The crime is the second mass shooting within weeks in New York City during a year that has otherwise seen declining gun violence. On July 29, a man stalked through a Manhattan office tower with a rifle, wounding one person and killing four others. A New York City police officer was among those who died.

Mayor Eric Adams said both shootings reinforce “why we do this work of going after guns off our streets.”

“This is the second within weeks, and we don’t want this to turn into a normal course of doing business of violence in our city,” he said.

Those wounded Sunday were being treated at hospitals for non-life-threatening injuries, Tisch said. The ages of the victims range from 19 to 61. A 19-year-old man died at the scene and two other men — ages 35 and 27 — died after being transported to a hospital.