NORTHBOROUGH, MASS. - Former All-Star pitcher Mark Fidrych suffocated after his clothes became entangled with a spinning part on the truck he was working on, Massachusetts authorities said Thursday.

The state medical examiner's office ruled the death an accident, according to a release from the Worcester District Attorney's office. A friend found Fidrych, 54, beneath a 10-wheel dump truck on Monday at his Northborough farm.

"He appeared to have been working on the truck when his clothes became tangled in the truck's power takeoff shaft," District Attorney Joseph Early Jr. said.

A power takeoff shaft is a driveshaft that spins at high speed and can be used to power another piece of equipment.

The investigation is now closed, authorities said.

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