A Brooklyn man who was lying on the subway tracks was struck and killed by a train in Manhattan Monday morning, police said.

The victim, 21, was run over by a northbound 6 train as it barreled into the 33rd Street station at Park Avenue at about 5:24 a.m., police said.

The man was rushed by ambulance to Bellevue Hospital in cardiac arrest, and was later pronounced dead, authorities said.

Witnesses said he appeared to be intoxicated.

Police did not release his identity pending notification of his family.

No criminality is suspected, police said.