The Oklahoma Highway Patrol is looking for a semi that collided with a van overnight and didn't stop.
The incident happened just west of downtown Tulsa in the westbound lanes of Highway 412 at about 2 a.m.
Troopers said one of the wheels of a semi struck the passenger side of the van, causing the van to almost run off the highway. The truck kept going. The van's driver was not injured.
The OHP says it still hasn't found the semi.