A man was found dead on a subway platform in Sunset Park, Brooklyn, on Sunday afternoon, police said.

Commuters found him lying face-down and unresponsive on the northbound R platform at 59th Street and 4th Avenue at 12:45 p.m., according to cops.

Emergency responders rushed him to Lutheran Hospital, where he was pronounced dead.

His body did not display any signs of trauma, authorities said.

The man’s identity was not immediately released.