Troopers believe it was a driver's lack of focus, his inattention to the road that led to a Maysville area accident resulting in a semi truck landing upside down and traffic held up for hours near the crash site.
Injured was Harry Jacobs, 63, of Fletcher, who state troopers report was alone while driving a large truck eastbound on state Highway 19.
Coming from the opposite direction on the same highway were a pickup truck driven by Adam Gregory, 27, of Blanchard and a 2018 Chevrolet driven by Jeffery Grisham, 35, of Sulphur.
Oklahoma Highway Patrol troopers called in to investigate report the truck driven by Gregory went left of the highway's center line, where it struck the semi truck around 8:30 a.m. Monday, Feb. 4 at a site about five miles west of Maysville.
The large truck went off the road to the right overturning a half time landing on its top.
The third vehicle driven by Grisham was struck by debris from the collision.
Troopers listed inattention as the cause of the collision.
Jacobs was airlifted from the scene and flown to OU Medical Center in Oklahoma City. He was admitted in stable condition with head, internal and external injuries.
Grisham, suffering from head injuries, was taken by a Lindsay E.M.S. ambulance to OU Medical Center, where he was admitted in stable condition.
As for Gregory, troopers report he was not injured.
According to troopers, all three individuals involved in the accident were wearing seat belts at the time of the wreck.
The road was closed at least partially for nearly six hours throughout Monday as crews cleaned up the crash site.
Assisting troopers at the site were Elmore City firefighters and an ambulance crew and Garvin County deputies.