There is an active shooter at YouTube's headquarters in San Bruno, according to San Bruno Police. 

Sources say a woman shot her boyfriend. Also hearing reports that the shooter is "down" but police have not yet confirmed that. 

EDITOR'S COMMENT: What did they expect when they started Censoring people's viewpoints?  Act like a Tyrant, get treated like  Tyrant!

City Manager Connie Jackson says they've received multiple 911 calls from YouTube reporting a shooting. 

A witness told KRON4-TV that they heard 20 shots fired.

He also heard that a woman was shot and crawled into the Carl's Jr. next to YouTube. 

The headquarters is located at 901 Cherry Avenue. 

A YouTube employee tells CNN she saw one person shot on the patio where they eat.