By Lauren Mascarenhas, CNN

(CNN) — Police are searching for multiple shooters who killed three people and wounded nine others in a shooting authorities say stemmed from a gang-related dispute at a crowded Brooklyn lounge overnight.

Police have identified 12 victims from the shooting that took place just before 3:30 a.m. at Taste of the City in Brooklyn’s Crown Heights neighborhood, New York City Police Commissioner Jessica Tisch said. Police initially identified 11 victims.

Among the victims, responding officers found a 19-year-old male dead on scene, and a 27-year-old man and 35-year-old man died of their injuries in the hospital. The remaining nine victims were hospitalized with non-life-threatening injuries, Tisch said Sunday afternoon.

The victims range in age from 19 to 61. Police believe some of the victims were involved in the shooting, while others were bystanders, Tisch said, emphasizing the information is still preliminary.

Located on Franklin Ave. in Crown Heights, Taste of the City says it offers food, cocktails, hookah and entertainment nightly.

With no suspects in custody, police are now searching for up to four shooters they believe were involved in the incident. Detectives found 42 shell casings at the scene from 9 mm and .45 caliber weapons, Tisch said.

Police were working to determine whether a firearm found in the vicinity was connected to the shooting, the commissioner said early Sunday morning.

New York City Mayor Eric Adams urged anyone with information about the incident to come forward.

The mayor also said he mobilized police and community partners to work with the friends, families and victims to stop any potential retaliatory action.

“We’re always concerned after a shooting, retaliatory shootings will follow if we don’t get on the ground with our crisis management team and other partners,” Adams said.

The commissioner said more than half of the city’s shootings are driven by gang violence, but the incident is still an “anomaly” in New York, where shootings are on the decline.

She cited “the lowest number of shooting incidents and shooting victims seven months into the year that we’ve seen on record in the city of New York.”

Still, the incident comes on the heels of multiple shootings this summer, including a shooting earlier this month in the city’s famed Times Square that left three people injured and the high-profile shooting in a Manhattan skyscraper that killed four people in July.

There have been 272 mass shootings in the United States this year alone, according to data from the Gun Violence Archive, which like CNN, defines a mass shooting as an incident in which four or more people are injured, excluding the shooter.

This story has been updated with additional information.

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