Police are investigating a deadly hit and run on the Upper West Side.

Officers found a 21-year-old man lying in the crosswalk at the corner of Broadway and 61st Street around 3:15 a.m. Saturday.

Investigators say he was hit by an unknown vehicle that fled north on Broadway.

The man was pronounced dead at the scene.

No arrests have been made.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.