SPOKANE, Wash. -

Alcohol was a factor in a late night crash that sent eight people including four children to the hospital, according to police. Washington State Patrol says the driver of a van who failed to yield at a stop sign was hit Sunday by a van traveling on Highway 395.

Police say drugs or alcohol were a factor and they plan to arrest the driver of the first van on charges of vehicular assault and DUI.

WSP says a Chevy G2 van was heading westbound on Crawford road and failed to stop at Highway 395 around 11 p.m. They collided with a Chevy Ventura van which was heading south on the highway.

Trooper Robert Bohling says the injuries to the children did not appear to be too dramatic. They were released from the Providence Sacred Heart Medical Center early Monday morning.

The mother who was airlifted to the hospital is listed in critical condition and the father in satisfactory condition.

The condition of two people in the second van are unknown. They were transported to Holy Family Hospital.

Both cars were totaled in the crash and towed away. The highway was closed in both directions for several hours while police investigated and cleared the scene.