At approximately 7:30 a.m., emergency responders were dispatched to an area on State Road 42 near County Road 100 East for the accident.
According to Clay County Sheriff's Department Patrol Sgt. Jason Frazier, the driver of the vehicle, Herman Hedden, 61, was traveling westbound on SR 42, in a gray Jeep Cherokee Sport Utility vehicle, and left the roadway.
"It looked like he traveled 150-yards off the roadway before coming to a rest," Frazier told The Brazil Times.
Frazier suggested the vehicle may have rolled at least one time.
"It looked like he went across the culvert," Frazier said. "It was a pretty violent rollover."
Poland resident and fourth-year Indiana State University nursing student Chris McGillam told The Times she arrived on the scene heading to school.
"I tried to keep him awake and talk to him," McGillam said. "He was thrashing about so I tried to keep him still."
Hedden had to be extricated from the vehicle and was transported to St. Vincent Clay Hospital via TransCare for stabilization.
Hedden was not stable enough to be flown from the scene and later died en route to the hospital.
East and west traffic on SR 42 was closed periodically as crews cleaned up the area.
Officials have confirmed an autopsy will be conducted to determine the cause of death.
Other agencies responding to the accident included Indiana State Police, Clay County Search and Rescue, the Center Point Volunteer Fire Department, Air Evac, and the Jackson Township Volunteer Fire Department.