A geocaching game in which a student put an item into a PVC pipe into a tree at the entrance to Disneyland triggerd the theme park's lockdown for hours as a bomb squad investigated, officials said.
No one was allowed into or let out of the Anaheim theme park as the after the incident was reported during a pre-opening walk through at 7 a.m. The park was set to open at 8.
Geocaching is a popular outdoor game in which players use GPS to hide and find treasures.
"Initially that was one of the things that was at the forefront of our minds was geocaching," said Anaheim police Sgt. Bob Dunn, a department spokesman.
The all clear was given after the person responsible for the message called police to let them know it was a peaceful note, police said.
Suzi Brown, a Disneyland spokeswoman, said the park was shut down out of an "abundance of caution."
"This is not the first time," Brown said. "Unfortunately, people can't do that. We take it seriously."
The park reopened about 11 a.m.
As a courtesy, officials said they'd keep both Disneyland and California Adventure open an hour later than normal Saturday due to the inconvenience.
Disneyland would close at 1 a.m. and California Adventure would close at 10 p.m.
The park had been set to open at 8 a.m. Saturday. But no one was allowed in or let out of the Anaheim theme park after security officers found a suspicious package during a pre-opening walk through at 7 a.m.
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