A 34-year-old man was shot in the leg on an escalator in the 161 St-Yankee Stadium subway station in the Grand Concourse section of the Bronx.
The NYPD says the man was taken to NYC Health + Hospitals/Lincoln in stable condition.
The MTA says 4 trains are bypassing 161 St-Yankee Stadium in both directions while NYPD conducts their investigation at the station.
As an alternative commuters can take a Bx1 or Bx2 bus for service in both directions.
Police say no arrests have been made.