Facebook and Instagram evacuated over bomb threat

No one has been reported harmed. No bomb reported found.

Police in Menlo Park, CA are at the Facebook and Instagram campus near the 200 block of Jefferson Avenue. According to multiple local news reports, NYPD forwarded an anonymous tip to local authorities.

NBC Bay Area:

A building on Facebook's campus in Menlo Park was evacuated Tuesday evening after a bomb threat, police said.

Menlo Park police said the threat was called into the New York Police Department's Crimestopper unit, which in turn notified local authorities.

According to Menlo Park police, the bomb threat was made to a Facebook building at 200 Jefferson Drive.

Bomb squads from allied agencies across San Mateo County are on scene and going through the building. The NBC Bay Area chopper spotted several police patrol cars on the campus.

Here's KRON's early report:

Police are investigating a bomb threat at Facebook's campus in Menlo Park Tuesday evening.

The Menlo Park Police Department says they were alerted by the New York Police Department of an anonymous tip regarding a bomb threat to Facebook.

Menlo Park police then issued an alert at 5:22 p.m. asking residents to avoid the area of the 200 block of Jefferson Drive near Constitution Drive as they investigate.

Facebook's campus has been evacuated.

San Mateo County allied agencies bomb units are currently checking the building.

Law enforcement officials did not provide any further details on the threat.