A 57-year-old man died Friday afternoon after being struck by a truck.

The California Highway Patrol says the man was walking on the shoulder of Interstate 8 near the Jaime Obese Sunbeam Rest Area when, for an unknown reason, the man walked into the path of a box truck that was westbound on the freeway. The driver of the truck, 27-year-old Alonso Miramontes - Marquez, was unable to avoid the pedestrian and struck the man. The pedestrian was pronounced dead at the scene. The accident remains under investigation. The identity of the victim is pending notification of next of kin.