SUNDAY UPDATE: The Williamson County coroner's office completed the autopsy on Alleman. Preliminary results reveal the cause of death as multiple impact trauma. The death has been ruled an accident pending the outcome of the National Transportation Safety Board and Federal Aviation Administration investigation.
ORIGINAL STORY: The Williamson County, Illinois deputy coroner tells us John Alleman, 54, of Carbondale died in a Friday night plane crash at the Williamson County Airport.
Todd Greiner, 64, from West Frankfort was also in the plane. He was air-lifted to a St. Louis hospital in critical condition.
The NTSB says the plane was performing a touch and go exercise when the plane skidded off the runway. The airport closed the north and south portions of the runway. The east and west portions of the runway remain open.
The NTSB is removing the plane this afternoon and are reviewing the plane's records.
Autopsy and toxicology reports on being done on Alleman.
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