The incident happened just before 2 a.m. at the West 96th Street and Broadway station.
The 34-year-old victim was pushed onto the tracks and struck his head on one of the rails.
He was taken to the hospital in critical condition where he later died from his injuries.
A 28-year-old man, identified as Andre Boyce, was taken into custody and later charged with manslaughter.
It appears there was some kind of argument between the men prior to the incident, which spilled out onto the platform.
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