(CNN) -- Police responded to Facebook's headquarters in Northern California to check on a threat Tuesday night. The threat was deemed noncredible. It was made at around 7 p.m. local time (10 p.m. ET), said police spokesman Dave Bertini. He did not specify the nature of the threat or how it was made. Officers closed off the entrance to Facebook's headquarters in Menlo Park and asked its employees to stay where they were, the San Jose Mercury News reported. They searched the campus and found nothing suspicious. Police gave the all-clear, and Facebook's staff departed normally for the night, Bertini told CNN.
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Report: Police closed off the entrance to Facebook's headquarters
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After searching the campus, they found nothing suspicious
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Police later allowed employees to go home as planned
Its services have been available to the public since 2006, and it moved into its current @placeholder headquarters in 2011.