A 29-year-old Santa Nella man was killed Saturday night after his vehicle struck a guardrail and overturned on Interstate 5 in Stanislaus County, according to the California Highway Patrol.

Arbin Perez-Chaparro was driving a 2002 Honda sedan southbound near Ingram Creek Road when the crash was reported at approximately 9:10 p.m. Oct. 17.

When officers arrived, they found the Honda overturned on its roof in the center median. Perez-Chaparro, who was wearing a seat belt, was pronounced dead at the scene.

Investigators have not determined what caused the vehicle to leave the roadway. CHP officials said it is unknown whether alcohol or drugs played a role in the collision.

Traffic control remained in place for about six hours while authorities investigated the crash and cleared the scene.

The incident remains under investigation. Anyone with information is asked to contact CHP Officer A. Rodriguez at 209-545-7440.