El Dorado County Sheriff's deputies have identified the four people killed in a horrific car accident involving a car that collided with a minivan on a rural highway in Northern California.

Five other people were hurt when a Toyota Prius crossed the center line on Highway 50 near Placerville on Saturday night and struck a Toyota Sienna minivan "broadside," said California Highway Patrol spokesman Officer John Frizzell.

In the Prius, all but one in a family of four, save 10-year-old Elly Su, from Oakland were killed in the crash.

Deputies identified the father as Sheng Kun Su, 38, who was driving the car; the 39-year-old mother Shue Zhen Zhao and their 8-year-old son Shawn Su.

Of the five Pollock Pines residents in the minivan, 4-year-old Nora Elizabeth was killed, Frizzell said. The four others — 35-year-old Danielle Marie Temple who was driving; Will John Temple, 51, and two 1-year-old twins, John Maxwell and John James Temple, suffered minor to moderate injuries.

"We don't know what caused the Prius to cross into oncoming traffic," Frizzell said Sunday. "There's an infinite number of possibilities."

Investigators have pulled computers from both vehicles that would indicate how fast they were going at the time of the crash, but collecting that information would probably take days, Frizzell said.

The highway where the crash took place is just outside of Placerville, about 45 miles east of Sacramento. The highway has two lanes, with minor to moderate curves, and with a speed limit of 65 miles per hour, Frizzell said.

Elly Su was released from Marshall Hospital and is now in the custody of her extended family from the Bay Area.