WATCH LIVE: Reports Of Active Shooter At YouTube HQ In San Bruno California

PICTURE: Reuters

CALIFORNIA: Four people are being treated for gunshot injuries after a shooting at YouTube headquarters in Northern California, police say.

San Bruno Police Chief Ed Barberini said a woman believed to be the shooter was found dead in the building with a “self-inflicted wound”.

The condition of the injured, who have been taken to hospital, is unknown. Earlier, panicked YouTube employees fled the building, in San Mateo county, south of San Francisco.

San Francisco General Hospital is treating three patients from the shooting, and one is in a critical condition, the Associated Press reports.

One employee at a nearby fast food restaurant told Fox station KTVU he had treated a young woman who suffered a gunshot wound to the leg. He said he had fashioned a makeshift tourniquet from a bungee cord as they waited for first responders.

WATCH LIVE: Reports Of Active Shooter At YouTube HQ In San Bruno California (Courtesy: ABC News)