Three rides at Disneyland, including the famous Space Mountain roller coaster, were temporarily closed as the company reviews its safety protocols after being cited by state regulators.

Disneyland Resorts spokeswoman Suzi Brown says the resort received citations Friday from the California Division of Occupational Safety and Health.

The citations were related to an incident in November when a contracted worker was injured while performing maintenance on Space Mountain.

Brown says the closures Saturday of Space Mountain, the Matterhorn Bobsleds and Soarin’ Over California were voluntary and were made out of an abundance of caution.

The Matterhorn reopened Sunday. Brown said Sunday it is unclear how long the other two rides will remain closed.

Officials with Cal/OSHA did not immediately reply to a request for comment.