The driver in a crash that killed a 14-year-old boy Saturday morning has died from injuries he suffered in the collision with an 18-wheeler on U.S. 190 near Covington, State Police said Monday.

Troopers had stopped the car, which had been traveling at speeds above 100 mph on U.S. 190 near La. 1077. While they were questioning the 14-year-old who was driving the car, the front-seat passenger, Brandon Bigner, 21, jumped into the driver’s seat and drove away westbound.

About two miles from the site of the initial stop, Bigner swerved across the eastbound lane of U.S. 190 onto the eastbound shoulder and then overcorrected into the path of an 18-wheeler driven by Walker Hurt, 62, of Gulfport, Mississippi.

Bigner, who was not wearing a seat belt, was ejected from the vehicle and suffered severe injuries. He was taken to North Oaks Hospital, where he later died.

A rear-seat passenger, 14-year-old Sloan McDow, of Folsom, was wearing a seat belt but died at the scene.

Troopers do not believe the truck driver was impaired. He voluntarily provided a blood sample. Alcohol use is suspected on the part of Bigner.

The original 14-year-old driver was arrested for speeding and underage DWI. He was released to the custody of his parents.