Disneyland's Space Mountain ride remained closed Thursday while state officials investigate how a guest at the theme park got off the roller coaster while it was in motion.
The incident happened Tuesday afternoon, said Luke Brown, a spokesman for Cal/OSHA, the state agency that is investigating the circumstances.
"Disney is fully cooperating with Cal/OSHA and we're working with Disney to determine what changes are needed going forward," Brown said.
Disney officials say they hope to "get the attraction up and running shortly."
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An unidentified man in his 20s "forced" his way off the ride despite a lap-bar restraint. He escaped injury but was taken to an area hospital as a precaution, officials said.