Two women from Oklahoma died when their car collided with a pickup truck driven by a man going the wrong way on the Kansas Turnpike.

The Kansas Highway Patrol says the accident occurred Tuesday night on Interstate 35 in Wichita.

The patrol says the driver, 65-year-old Donald Fifer of Haysville, was driving south in the northbound lanes when his truck hit a vehicle head-on, struck a guardrail and overturned before starting on fire. He was hospitalized in Wichita.

The driver of the second vehicle, 38-year-old Lori Uchiyama, of Blackwell, Okla., and her passenger, 33-year-old Elizabeth Goodno, of Ponca City, Okla., were killed.

Investigators are trying to determine why Fifer was driving the wrong way.

The accident closed the turnpike for several hours.