Four attractions at Disneyland were briefly closed Wednesday after a small chemical leak was discovered coming from the park’s water filtration system, authorities said.

Anaheim police and fire departments responded to the park at 1:30 p.m. where a chemical commonly found in pool cleaner was reported leaking from a pump at one of the park’s four backstage filtration facilities, said Sgt. Daron Wyatt of the Anaheim Police Department.

Park officials responded by closing Autopia, Star Wars Launch Bay, Disneyland Railroad and the Monorail as a precaution, said park spokeswoman Suzi Brown.

The leak was resolved by 3 p.m., and rides were operating again shortly afterward. No one was reported injured.

Anaheim police briefly closed Harbor Boulevard between South Manchester Avenue and Disney Way.

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