The incident took place at a Manhattan-bound C train in Brooklyn at around 5.40 p.m. on Tuesday evening after a fight among straphangers which did not cause any large-scale panic among commuters, reports Xinhua news agency.
However, the shooting resulted in inconvenience to passengers for around two hours while police investigated the scene.
Both of the victims were in a stable condition and rushed to hospitals.
But the gunman remains at large.
New York recorded over 900 shooting incidents including 308 ones in Brooklyn as of November 8, according to the New York Police Department.
In April 2022, a man named Frank James shot ten commuters on a subway in Brooklyn, which was widely reported and stoked fears of gun violence.
IANS