UPDATE: Authorities have identified the victim as 54-year-old Rosemary Hernandez of Merced. They say the driver of the van, her 17-year-old son, possibly fell asleep at the wheel.
One person is dead and another is being transported to the hospital after a crash near Merced.
It happened around noon on northbound Highway 99 and Campus Parkway.
The passenger killed was ejected when the white van they were riding in rolled over, California Highway Patrol officials say. The 17-year-old driver is being transported to a local hospital.
Stay with ABC30 Action News for the latest on this developing story.
1 killed in Merced rollover crash