Three ride operators said a Disney roller coaster was "functioning normally" before one car smashed into another car, sending 17 passengers to the hospital, according to a police report released Tuesday.
The operators heard the brakes engage on one car, then heard it ram into another car on the California Screamin' ride at Disney's California Adventure on July 29, states the Anaheim Police Department report. The ride was operating without problems prior to the 6:40 p.m. crash.
The ride remains closed while inspectors from the state Division of Occupational Safety and Health investigate the cause. Inspectors are looking at whether an operator or computer error led to the collision.
City officials originally reported that 15 people went to the hospital, but a fire report released Tuesday shows that there were 17 people. Ten ambulances took the riders to five hospitals, the fire report states. Nine of the patients were strapped to back boards.
A police detective noticed "what appeared to be broken pieces of the coasters" below the tracks, the report states. About an hour after the crash, police notified state investigators, who took over the scene about 9:05 p.m.
State inspectors must clear the ride in order for it to reopen. Employees who worked at California Screamin', including the three ride operators, have been assigned to other jobs, said Rob Doughty, Disney's spokesman.