The body of Anton Gruber, 81, was found in the white 1980-90s style campervan after emergency services were called to a fire on the Cape Nelson Road just before 8pm.

Detective Sergeant Jason von Tunk, of the Portland police crime investigation unit, said the arson and forensic chemist had examined the scene and further inquiries identified the man, who resided in Millgrove in the Yarra Ranges and was travelling in Portland.

The detective said the man's next of kin had been informed.

"A coroner's brief is being compiled by Portland detectives into the circumstances of the death," he told The Standard on Wednesday.

"At this stage we believe it was a result of misadventure. There are no suspicious circumstances and we do not believe it was a suicide."

Detective Sergeant von Tunk said it was an unfortunate incident.

"It is a very sad end to someone's holiday," he said.

"We would like to warn people not to use non-camping areas to sleep or start fires because tragedy can happen."

The detective thanked the public for their assistance.

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