(KRON) -- Archie Williams High School in San Anselmo received a bomb threat on Wednesday morning, all classes were canceled, and students are being sent home, officials said.

A family reunification site has been established at the Red Hill Shopping Center.

"While we believe this threat is not credible, out of an abundance of caution, the school administration has decided to cancel classes for the remainder of the day," the Central Marin Police Authority wrote.

Central Marin Police Authority officers remain on campus as of 10 a.m. while officers conduct a systematic search of the campus.

Administrators said parents should not go to the school to reunite with their children. Students are being evacuated to the shopping center.

Archie Williams High School administrators wrote in a statem

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