Cops are looking for a driver who fatally struck a 46-year-old man who was lying down on a Brooklyn street early Sunday.

The victim was lying in the roadway when a driver going east on on Pitkin Ave. in East New York struck him near Chestnut St. about 1 a.m., cops said.

The driver left the scene but cops aren’t sure they realized they struck someone.

Medics rushed the victim to Brookdale University Hospital but he could not be saved. His name was not immediately released.

Police are investigating how the victim came to be lying in the roadway.