NEW YORK (1010 WINS) — A subway rider reportedly went off the rails and attacked a fellow straphanger on a subway train in Manhattan.

The fight broke out Wednesday afternoon on a downtown D train near West Fourth Street.

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According to the Daily News, the subway rider told another train passenger, identified as a carpenter from Coney Island, to stop staring at him and then threatened to beat him up.

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The rider then bit the carpenter on the head and the two men started brawling, the Daily News reported.

Video published on the Daily News website showed the men grappling on the train as other riders tried to get out of the way.

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Eventually, other straphangers stepped in, pulled the men apart and shoved the rider off the train at the Broadway-Lafayette Street stop.