NOWATA COUNTY, Oklahoma - Five people died and a child is in critical condition after a Saturday head-on collision on U.S. Highway 169 at County Road 27, the Oklahoma Highway Patrol has confirmed.

The highway was completely blocked for about two and a half hours while emergency crews worked.

According to OHP, Micah Walker, 35, of Nowata, was northbound on U.S. 169 in a Chevrolet Malibu when he went left of center and struck a Kia SUV. Walker was pinned for an hour and 30 minutes. He and his passenger, 34-year-old Calvin Wyckoff, of Tulsa, were both pronounced dead on the scene.

The driver of the Kia, 59-year-old Kevin Smith, of Nowata, and Maria Smith, 49, also were pronounced dead on the scene. Two children, a 13- and 14-year-old, were transported to a hospital. The 13-year-old died in the ambulance en route, and the 14-year-old is in critical condition.

OHP said both drivers appeared to be in normal condition before the crash and the cause of the collision is still under investigation.

The collision report says neither the driver nor passenger in the Chevy were wearing seatbelts. In the Kia, Kevin and Maria Smith, as well as the surviving child, were wearing seatbelts, but the 13-year-old was not, according to the report.