Georgia ? Guy Heinze Jr. arrived home from a night out to find a gruesome scene — seven people dead, a cousin with Down syndrome clinging to life and another critically injured.

“My dad’s dead, my uncle’s dead. There’s like six. My whole family’s dead!” Heinze said, struggling to describe the scene to a dispatcher after his neighbor called 911 and handed him the phone. “It looks like they’ve been beaten to death. I don’t know what to do, man.”

Moments later, the 22-year-old went back inside and discovered his cousin Michael still breathing.

“Michael’s alive, tell them to hurry!” Heinze yelled in the background as a maintenance man at the mobile home park stayed on the phone with the dispatcher. “He’s beat up! His face is smashed in!”

A 12-minute 911 call released Monday provided some of the only details about a crime — which the county police chief calls the worst murder case in his 25 years on the job — that has this coastal Georgia community on edge.

Heinze’s cousin, whom police identified as 19-year-old Michael Toler, died later at a hospital, bringing the total slain to eight. A ninth person remained in critical condition Monday. Police have not named any of the other victims and said they have no suspects.