FORT COLLINS — Authorities say an 83-year-old Loveland man died after the tractor he was using rolled and trapped him underneath.

The Fort Collins Coloradoan reports (http://noconow.co/1k4AUgB ) Ralph Ollila was found crushed under the tractor in southeast Loveland at about 3 p.m. Sunday. He was pronounced dead about an hour and a half later.

The Larimer County coroner's office says Ollila died from asphyxiation and chest injuries. His death has been ruled an accident.

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Information from: Fort Collins Coloradoan, http://www.coloradoan.com