Idaho State police are still investigating a car vs. semi crash on Ustick Road that led to the death of a 30-year-old Caldwell man Thursday night.

ISP officials say Justin Davis was killed after a car he was a passenger in collided with a semi near the Ustick/Farmway roads intersection around 8 p.m. Thursday.

The driver of the car, 26-year-old Habtom Tesfazgi-Russom of Boise, was taken to Saint Alphonsus Regional Medical Center for treatment of undisclosed injuries. The driver of the semi was not hurt, according to ISP reports.

Investigators say Tesfazgi-Russom was driving a Toyota Camry eastbound on Ustick when he failed to stop at the stop sign at Farmway Road and drove into the path of a semitrailer, which was going northbound on Farmway Road, according to ISP reports.

The truck smashed into the passenger side of the Camry, where Davis was sitting, according to reports.

Davis, who was pronounced dead at the scene of the crash, was the only one of the three who was not wearing a seat belt, according to ISP reports.

The intersection of Farmway and Ustick roads is southwest of Caldwell. There is a stop sign on Ustick but traffic on Farmway does not have to stop. The speed limit on Farmway where the crash occurred is 55 mph, according to ISP reports.

No citations had been issued in connection with the crash as of Friday morning.