A rollover accident left three people in separate hospitals.
The crash happened just after four o'clock Wednesday afternoon on K-44 highway, about 12 miles East of Anthony in Harper County.
Kansas Highway Patrol investigators said the eastbound driver drove off the roadway, overcorrected, causing it to overturn.
Troopers said the driver of the pickup truck, 23-year-old Travis Grimm of Pond Creek, Oklahoma, was taken to Anthony Medical Center.
Passengers, 26-year-old, Casey Mangrum of Ponca City, Oklahoma and 47-year-old, James Cunningham also of Ponca City, are listed in critical condition at Wesley Medical Center.
Troopers said the men were not wearing seat belts at the time of the accident.