A Cleburne man involved in an Erath County farm accident Thursday has died.

Doyle Glenn Kolar, 50, died Sunday in the intensive care unit at John Peter Smith Hospital, according to the Tarrant County Medical Examiner's Office. He was pronounced dead at 6:20 a.m., according to online records.

Kolar was transported by medical helicopter to JPS from the scene of an accident near Lingleville on PR 949, according to Steve Cole, county EMS director.

It is unclear if Kolar was employed by the Erath County property owner or if he owned the property himself.

Kolar was reportedly conscious and able to speak with responders from Lingleville Volunteer Fire Department and Cross Timbers Emergency Response Team when they arrived at the scene shortly after 3 p.m. Thursday.

According to Facebook posts by Kolar's son, Glenn Kolar, his injuries included a torn carotid artery, collapsed lungs and damage to his internal organs.

While the circumstances of the accident are still not clear, Chief Investigator Jason Upshaw said it appears Kolar was operating an old tractor with a shredder when the accident occurred.

"We are not sure if Mr. Kolar was trying to get on or off the tractor but it appears he somehow bumped the gear shift, causing the tractor to lurch into gear," Upshaw said. "It appears he was then run over."

Following the accident, Kolar was reportedly able to drive himself "some distance" in the direction of a farm house and was found by another unidentified individual who called 911.