Four California residents were killed in a two-car crash on an Idaho highway on Saturday when a Honda Civic crashed into a pickup head-on.

Head-On Collision

Idaho State Police said all four of the victims were riding inside the Honda Civic at around 2:20 p.m. on Highway 95 near Marsing. They were identified as 22-year-old Juan Pablo Faris of Vacaville, 22-year-old Jasmin Rojas-Carrasco of Oceanside, 26-year-old Melissa Rojas-Carrasco of Oceanside.

The last victim was a 16-year-old girl from Oceanside who has not been identified due to her age. However, authorities have notified her family of the incident and her death. While an investigation is ongoing, police have not determined how the crash happened.

But some witnesses said the Civic was traveling north while the GMC Sierra pickup was driving south before they crashed. After the initial collision, the pickup quickly caught fire, and three of its occupants were rescued by a witness.

The passengers of the pickup included a 16-year-old boy, a 20-year-old woman, and a 21-year-old man. Authorities immediately transported the three to a local hospital to be treated for their injuries which were not considered life-threatening.

Officials closed off both lanes of the highway for more than three hours after the incident to make way for the removal of the debris, Mercury News reported.