One of the three people killed in an air ambulance crash in the Chicago area Monday died of a heart attack, not injuries from the crash, The Chicago Tribune reported Thursday.
An autopsy found that John Bialek’s cause of death was coronary artherosclerosis, hardening of the arteries to his heart, as well as stress from the accident, The Tribune reported.
Bialek, 80, was a patient being transported on an air ambulance from West Palm Beach, Fla., to the Chicago area when the twin-engine aircraft crashed in Riverwoods, a suburb.
He died, as did his wife Ilomae, 75, and William Didier, the 58-year-old pilot from Cedar Grove, Wis., according to The Tribune. Two people survived the crash.
Before the crash, someone on the plane told air traffic contol that they had run out of fuel.
The accident is being investigated by the National Transportation Safety Board.
Bialek was being transported to Illinois to get medical treatment for a blood infection, according to The Tribune.