(CNN) -- In an anguished 911 call, a Georgia man told dispatchers that he arrived home to find "my whole family's dead." Seven people were found dead Saturday at a residence in a mobile home park in Brunswick, Georgia. "I just got home," a man identified as Guy Heinze Jr. told the emergency dispatcher in the Saturday call, released Monday by authorities. "I was out last night. I got home just now, and everybody's dead. ... My whole family's dead. It looks like they've been beaten to death." Seven people were found dead Saturday at a residence at the New Hope mobile home park in Brunswick, Georgia, authorities said. Two others were hospitalized in critical condition; one of them, identified by police as 19-year-old Michael Toller, died Sunday.
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Police identify one of deceased as 19-year-old Michael Toller
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Guy Heinze Jr. heard on 911 call telling dispatcher he arrived home to find bodies
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"I don't know what to do, man," Heinze tells 911. "My dad, he's laying there dead"
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Police say "no known suspects" in the attack; 7 dead at scene, 8th died later
@placeholder was arrested Saturday night and faces charges of possessing a controlled substance and marijuana, as well as evidence tampering and making false statements to a police officer, Doering said.