Bomb threat in one of the buildings on Facebook campus in Menlo Park, California, has not been confirmed, Menlo Park Police Department said in a statement.
"The San Mateo County bomb unit was dispatched with explosive detection dogs that conducted a sweep of the building and found no suspicious packages or devices," the police said.
The building is clear and secure, it added.
Earlier, the police responded to a bomb threat that forced an evacuation of at least one building on the Facebook campus. The police reportedly received an anonymous phone call on the bomb threat.
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🔴 BREAKING NEWS | Autoridades estadounidenses evacuan sede central de FACEBOOK en Menlo Park, California por amenaza de bombapic.twitter.com/Lf5nh4EkHC
— el Pulp0 (@elPULP0) December 12, 2018
Al menos uno de los edificios del campus de #Facebook en Menlo Park, California, Estados Unidos, está siendo evacuado por una amenaza de bomba. pic.twitter.com/3RTd2H1LyQ
— ᵗᵃʲᵒᵈᵉ 20k🌐 (@TAJODE) December 12, 2018
A company spokesman later said that Facebook was looking into a bomb threat at its headquarters campus in Menlo Park, Reuters reported.
The spokesman also said that several buildings were evacuated.