The following is a news release from Idaho State Police.
The Idaho State Police is investigating a two-vehicle fatal crash that occurred at 3:20 a.m. on Sunday on eastbound Idaho Highway 50 at milepost 1.7, in Twin Falls County.
A 39-year-old female, from Roseville, California, was traveling westbound on Highway 50 in a Honda CRV. A 47-year-old male, from Twin Falls, was traveling eastbound on Highway 50 in a Freightliner semitruck.
The driver of the Honda veered left, and went into the eastbound oncoming lane where the two vehicles collided. The female driver was wearing a seat belt and was transported via air ambulance to the hospital.
Her passenger, a 35-year-old male from Butte, Montana, was wearing his seat belt and was transported via air ambulance to the hospital.
Her passenger, a juvenile, was in a child safety seat and succumbed to injuries at the scene.
The male driver of the semitruck was wearing a seat belt and was not transported.
Both eastbound and eastbound lanes were blocked for approximately six hours.
This incident remains under investigation by the Idaho State Police.