Editor's note: This story has been updated to reflect new footage surrounding the incident. A previous version was based on information provided by the NYPD who incorrectly described the altercation continuing on the subway platform.

A 30 year-old man is dead following a brawl on a Manhattan subway this week, police said.

Officers responded to a call around 2:30 p.m. Monday of a fight on the F-train as it pulled into the Broadway-Lafayette station.

Police say passengers described the 30-year-old man as “disturbed” and said he was threatening passengers.

A 24-year-old man intervened, police said, prompting a fight on the train between the two.

The 30-year-old, whom police have not identified, was already unconscious when officers arrived at the station. He was taken to Lenox Hill Hospital, where he was pronounced dead.

The 24-year-old man involved in the incident was taken into police custody but has been released without charges. The cause of death for the victim is still under investigation, according to the NYPD.