Ontario Provincial Police said on Thursday, at around 3:20 p.m., officers received a report of an unresponsive male at a commercial property on Airport Road, near King Street.
Police said the male had been trapped under a garage bay door.
According to police, the victim was pronounced dead at the scene.
Police have identified the deceased as 85-year-old Pasquale Salerno from Caledon.
OPP said the Ontario Ministry of Labour and the federal Department of Labour have been notified and are investigating.
“The office of the Chief Coroner for Ontario and OPP Forensic Identification Unit (FIS) are assisting with the investigation,” police said.