NEW YORK (NewsNation) — Authorities were searching for multiple suspects Monday after three people were killed and nine others were wounded in what appeared to be a gang-related shooting at a bar in New York City over the weekend.

Police said four gunmen fired more than 40 shots just after midnight Sunday in Brooklyn. The three people killed were men aged 19, 27 and 35. At least nine others, ranging in ages from 19 to 61, were taken to local hospitals, authorities said. Officials said they believe some victims were innocent bystanders.

NYPD: Argument, gang feud sparked NYC nightclub attack

NYC Police Commissioner Jessica Tisch said the preliminary investigation found the incident stemmed from an argument inside the club and that it appeared to be gang-related.

"Approximately 60% of our

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