BEND, Ore. -

A Southern California woman was killed and two people, including her young son, were injured early Monday when their car left rain-slickened Highway 97 north of Bend, struck a rock wall and overturned, Oregon State Police reported.

Around 2:10 a.m., a 1999 Dodge pickup driven by Juan Ignacio Lomeli Barbosa, 62, of Norwalk, California, was southbound on Highway 97 near milepost 132 when it lost control on wet pavement, hydroplaned across the northbound lanes and continued off the highway, troopers said.

The pickup slid backwards into a rock wall, rolled over and came to rest on its wheels, they added.

Passenger Marie Rosa Isela Tellez Maciel, 42, of Long Beach, California, was not wearing a seat belt and was thrown from the pickup, troopers said. She was taken to St. Charles Medical Center-Bend where she later was pronounced dead.

Barbosa and Maciel's son, Edmar Lopez, 8, also of Long Beach, also went to the Bend hospital for treatment of non-life threatening injuries. Both were wearing seat belts, troopers said. A hospital spokeswoman said Barbosa was treated and released; she had no information about Lopez in the hospital directory.

OSP was assisted at the scene by the Deschutes County Sheriff's Office and Bend Fire Department. Lead investigator is Trooper Zach Mickle.