Detective Sergeant Mark James, of the Hamilton police crime investigation unit, said on Monday that the seat of the fire appeared to be behind the cabin of the prime move.

"It doesn't look suspicious. The deceased is a man in his mid 60s from Woolsthorpe. The family has been notified," he said.

"An arson chemist from the Victoria Police arson squad and a Fire Rescue Victoria investigator are currently looking into the cause of the fire," he said.

"That may take some time," he said.

Earlier: Fire investigators are on their way to Hamilton after a man in his 60s died during a blaze which consumed the cabin of his truck.

Hamilton police Sergeant Rex Habel said fire services were called to the Hamilton saleyards on Sunday at 1.55pm after reports that a truck was on fire.

He said emergency services personnel found a semi-trailer was on fire off Portland Road and the cabin of the prime mover was ablaze.

"The cabin was on fire and the whereabouts of the driver was not known at that stage," he said.

"After the flames were extinguished the body of a deceased south-west man, believed to be in his 60s, was found in the cabin.

"The cause of the fire is unknown and under investigation. We are this morning awaiting the arrival of Fire Rescue Victoria and police fire investigators.

"They are expected to arrive here about 9am," he said.

Anyone with information about the truck fire is requested to contact the Hamilton police station on 5551 9100 or Crime Stoppers on 1800 333 000.

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