DISNEYLAND in Southern California has been evacuated following an explosion.

Initial reports indicated the blast happened in a bin in the area of Mickey's Toontown.

''Was sitting in Toontown at Disneyland and something exploded in the trash can. I felt the sound waves of it and Toontown is closed,'' Shawna Gonzales tweeted.

Authorities said the blast may have been due to dry ice in or near a trash can.

No injuries were reported in the blast, which was called in about 5.30pm Tuesday (local time), Sgt Robert Dunn of the Anaheim Police Department said.

''As a precaution we have evacuated Toontown,' Sgt Dunn told The LA Times.

He said the dry ice appeared to have been placed in a plastic bottle. Officers on the scene were gathering evidence.

Fire crews were at the scene.

A bomb squad from the Orange County Sheriff's Department also attended.

Disneyland Resort tweeted guests were allowed back in a few hours later.

''Review is complete. Mickey's Toontown has been deemed 'all clear' by local authorities. Guests are welcomed to return.

''There were no injuries and no reported damage. We are working with local authorities who are now on-site and reviewing.''

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Originally published as Disneyland evacuated after explosion