A New York City man narrowly missed being crushed beneath a subway train after a hammer-wielding attacker making homophobic comments fought with and then tossed a 21-year-old straphanger onto the tracks before fleeing the station, officials said.

The New York Police Department said the incident happened Nov. 11 at 1 a.m. at the Tremont Avenue B/D Train subway station in the Bronx.

The victim told police he was waiting on the northbound platform when a man began making anti-gay statements to him and then attempted to hit him with a hammer -- but missed.

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"The individual continued to struggle with the victim and threw him onto the train track," police said.

A group of Good Samaritans nearby were able to alert the motorman to stop the arriving train and prevent a potential tragedy. The 21-year-old was then helped back up onto the platform.

The NYPD on Tuesday released a sketch of the suspect wanted in the attack.

A sketch of the suspect wanted in the Nov. 11 attack in the Bronx.

A sketch of the suspect wanted in the Nov. 11 attack in the Bronx. (DCPI)

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The 21-year-old victim, who was not identified, was transported to Saint Barnabas Hospital where he was treated for lacerations and contusions to his head, according to the NYPD.

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The NYPD's hate-crime task force is investigating.

Anyone with information regarding the incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS, or submit tips by logging onto the CrimeStoppers website, or on Twitter @NYPDTips. Police said that all calls are strictly confidential.