A Pennsylvania woman was killed Monday after she fell into a meat grinder at a processing plant.

Jill Greninger, 35, worked at the Economy Locker Storage Company, a food processing plant in Pennsdale, Pennsylvania, about 175 miles northwest of Philadelphia. She was found by a co-worker who came to check on the machine after hearing unusual sounds coming from it.

The employee immediately called 911 and shut off the power.

According to reports, witnesses told local firefighters they had to spend nearly an hour taking the machine apart before finally getting her body out of the machine.

Charles Kiessling Jr., the coroner for Lycoming County, confirmed the cause of death with ABC News on Tuesday.

"This is just a tragedy, she died inside the moving parts of the machine," Kiessling said.

Kiessling believes that Greninger may have been standing on wheeled stairs before falling in.

"I don't know if she got caught with the moving parts and they pulled her in, or if she just slipped and fell. I don't know and there's no way of determining that," he said.

The Occupational Safety and Health Administration will further investigate the accident, according to WNEP, an ABC affiliate in Scranton.

Economy Locker Storage Co. has not commented about the accident.

A worker processes turkeys at the West Liberty Food processing plant in West Liberty, Iowa July 7, 2011.
Pictured: West Liberty Food processing plant, in West Liberty, Iowa. REUTERS