The man found badly beaten in the Gaslamp District early Sunday morning has died.
San Diego resident Eric Galen Hatcher, 29, was discovered lying on the road at G Street and Fourth Avenue with serious head trauma.
San Diego police say he had been involved in a fight that broke up as officers approached.
Hatcher was taken to the hospital but has since died.
Now, investigators are searching for a person of interest in this case, described as a white man between 25 and 30 years old, standing about 5-foot-9 and weighing 165 pounds. He was wearing a grey suit jacket and grey dress pants at the time.
The SDPD is expected to release video of the incident at a later time.
If you know anything about the fight, call the homicide unit at 619-531-2293 or Crime Stoppers at 888-580-8477.