A man's body was found shot to death on the South Side Sunday evening.

San Antonio police said two people found the man lying face down and partially on the road around 7 p.m. near Pleasanton Road and Mauermann Road.

One of the passersby attempted to revive the victim, but realized he was dead. San Antonio police responded and said the victim had been shot twice in the back of the head.

"It looked execution style from the way he was left on the street " said San Antonio Police Sgt. Jesse Garcia. "There were two bullet casings that were found there and one of the fragments was found next to him."

The victim had not been identified as of Monday morning. San Antonio police are investigating whether the shooting was gang related.