UPDATED 3:30 p.m. Thursday.
OAKWOOD — Preliminary autopsy results show a truck driver suffered a fatal heart attack early Thursday on Interstate 74 just east of Oakwood.
A release from the Illinois State Police at Pesotum said Michael Kronkow, 51, of Taylorville, was driving west on I-74 in the driving lane about 4:30 a.m. when his tractor-trailer truck left the road.
Police said the truck went up the embankment and back down toward the roadway in the grassy area north of the road.
Mr. Kronkow was unresponsive when help arrived. He was taken to Provena United Samaritans Medical Center in Danville, where he was pronounced dead.
He was wearing a seat belt and remained in the semi.
Vermilion County Coroner Peggy Johnson said that while toxicology results are pending, the preliminary autopsy results showed Mr. Kronkow died of a massive heart attack.