A semi caught fire in a crash on Wednesday night on WYO 220 near Alcova. (Contriibuted)

UPDATE: 8:25 a.m. Thursday, regarding the two incidents that occurred between 8 and 9 p.m. Wednesday in the Casper area.

The crash at West Yellowstone Highway and the West Belt Loop (Wyoming Highway 257) involved two vehicles, the Natrona County Sheriff’s Office confirmed. Casper Fire-EMS also assisted and confirmed that at least one person was extricated through the windshield of one of the vehicles and transported to the Banner Wyoming Medical Center. Casper Fire-EMS does not have information available regarding the condition of that person. The Mills Police Department is the lead investigating agency on the crash. The responding Mills PD officer was off duty on Thursday morning so further information from Mills PD is not immediately available.

The WYO 220 incident involving a semi trailer hauling cat litter is being investigated by the Wyoming Highway Patrol. Sgt. Jeremy Beck said a witness reported the smell of burning brakes. The driver of the semi was apparently able to disconnect the trailer from the cab. There have been no reported injuries related to that incident.

UPDATE: At least one patient was extricated from a vehicle involved in the crash at West Yellowstone Highway and the bypass highway (Wyoming Highway 257), NCFD Fire Chief Brian Oliver said shortly after 9 p.m. Wednesday. That patient was transported to the hospital. Oliver cautioned that the information he had available regarding the crash was limited at the time. Oil City will provide further updates if more information becomes available.

UPDATE: This story has been updated with information from the Natrona County Fire District.

CASPER, Wyo. — Emergency responders are responding to two separate incidents and both scenes remain active on roadways in the Casper area as of 8:45 p.m. Wednesday, according to Natrona County Fire District Chief Brian Oliver.

A semi truck caught fire Wednesday night on Wyoming Highway 220 west of Casper. While the Wyoming Department of Transportation has that incident listed as a crash, Oliver said the information he has available is that a trailer hauling cat litter caught fire but that a crash didn’t necessarily occur. However, the trailer that was reportedly detached from the cab of the semi was fully involved in the fire, he said.

WYDOT said in at 8:10 p.m. Wednesday that drivers should expect delays due to the incident near milepost 97 on WYO 220.

A separate crash occurred at West Yellowstone Highway and the bypass highway (Wyoming Highway 257), Oliver said. He said extraction efforts were a part of the response at that crash scene.

Real-time road conditions are available from WYDOT.