A man's body was found with a gunshot wound to the head early Thursday morning near Interstate 35 and AT&T Center Parkway, San Antonio police said.

A driver passing by noticed the body on the ground before 4 a.m. and called police.

Officers located the body in the I-35 north-to-south turnaround just south of AT&T Center Parkway.

Police found a trail of blood on the access road and detectives said it appeared as if the victim may have been running from the shooter and fell dead where he was found. Police said the man appeared to be in his 20s.

The southbound access road between AT&T Center Parkway and Walters was closed during the investigation.