The Highway Patrol says a man in his 50's was walking across the southbound side of Highway 99 near the Shields Avenue off-ramp when he was hit.
The C.H.P. says at around 5 a.m. Monday morning the victim was stuck by several cars including a big rig and was declared dead on the scene.
Two cars that hit the victim left the scene.
The victim's SUV was found parked on the freeway's shoulder.
Authorities are still investigating the accident. The name of the victim has not been released yet.