Police are investigating a hit-and-run that left a man dying on a Downtown street on Sunday, authorities said.

Officers responded to a report of “a person down in the street” in the area of Fifth Street and Pacific Avenue at about 3:54 a.m., according to Long Beach police spokesman Lt. James Richardson.

When officers arrived they found a man unconscious in the roadway, he said.

The victim was lying in the No. 2 lane of northbound traffic on Pacific Avenue, north of Fifth Street.

Long Beach paramedics rendered aid to the man before they transported him in critical condition to a local hospital where he died from his injuries.

“It is believed the subject was hit by a vehicle that fled the scene,” Richardson said.

Authorities said the man was “crawling east and west across the numbers 1 and 2 lanes of northbound Pacific Avenue,” when a motorist driving a white sedan, possibly a Nissan, north on Pacific in the No. 1 lane collided with the man.

After the crash, the motorist continued north on Pacific without stopping to render aid and turned east on Sixth Street.

The victim will be identified once the coroner’s office notifies relatives.

Collision detectives responded to the scene to investigate.

Anyone who may have witnessed the crash is asked to call LBPD Det. David Lauro at 562-570-7355. Anonymous tips may be submitted by calling 800-222-8477.

Editor’s note: This story has been updated with more information on the incident.