Officers who arrived on the scene located another man, who was taken to Gwinnett Medical Center with injuries. His condition was not released.
Police are trying to figure out the relationship between the victims.
"The exact relationship between the two men is unknown at this time,” Finney said. “That's still under investigation by the homicide unit."
Witnesses told Channel 2 they heard arguing, but they weren’t sure the cause.
"There were kids playing outside, riding bikes and it just broke out like a fight," Darius (no last name given) told Channel 2.
Authorities have not identified either of the men.