James Geddes, 50, was found late last Wednesday night in Rosemount Place. He died later in Aberdeen Royal Infirmary.
Detective Chief Inspector Malcolm MacLeod , who was leading the investigation, said the death of Mr Geddes was not being treated as suspicious. He said: "Our inquiries have revealed that James died of natural causes. His death is not being treated as the result of a criminal act."
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Hide AdDCI MacLeod added: "We are still appealing for any further witnesses to his last movements to come forward.
"I'd also like to take this opportunity to thank the public for coming forward and assisting us with the inquiry."