An accident at Knott's Berry Farm that injured 10 people Thursday night occurred when a roller coaster car failed to make it up an incline and rolled back, slamming into another car waiting in the station, a park spokeswoman said.
The 10 people, ranging in age from 12 to 60, received minor back and neck injures and were transported in six ambulances to local hospitals, the Orange County Fire Authority said.
The park remained open for its Halloween Haunt and was scheduled to close at its normal time of 1 a.m., spokeswoman Jennifer Blazey said.
She said accident occurred shortly before 8 p.m. on the Pony Express ride. The ride "opened in 2008 and has never had any problems," Blazey said.
She said it was unclear what caused the ride to malfunction. "We'll be investigating that," she said.
-- Robert J. Lopez and Andrew Blankstein