A Knoxville man died on Saturday after being trapped under a heavy equipment trailer.

The Marion County Communications Center received a 911 call on June 29 at 5:27 p.m. requesting an ambulance in the 1000 block of Story Drive for a male trapped under a trailer.

When rescue personnel arrived, they located and began life-saving measures on 53-year-old Richard Shilling, of Knoxville. Shilling had been working under the trailer when the jack supporting the trailer failed and landed on him. He was ultimately declared dead at the scene.

Responding agencies included the Marion County Sheriff’s Office, Columbia EMS and Mercy Air Ambulance.