SAN DIEGO -- A 38-year-old woman was killed and her 6-year-old passenger suffered major injuries in an accident involving at least three vehicles, authorities said Wednesday. Elidia Camarillo-Gonzalez, 39, of Vista was driving her Ford van westbound on state Route 78 just west of Sycamore Avenue in Oceanside in the Number 2 lane, going approximately 70 mph, when she collided with a Hyundai being driven by a 54-year-old woman around 9:20 p.m. Tuesday, said California Highway Patrol officer Alicia Contreras.

The van overturned and crashed into the concrete center divider, Contreras said, adding that both occupants -- neither one wearing a seat belt -- were ejected and thrown into the eastbound lanes.

The driver of a 2006 Ford sedan headed eastbound failed to avoid striking the woman as she lay on the ground, Contreras said.

The 6-year-old sustained major injuries and was transported to Rady Children's Hospital, Contreras said.