Update: According to the Daily Mail, the female shooter, who was dressed in a headscarf, shot her boyfriend before using the gun on herself.

A shooting was reported at YouTube’s headquarters in San Bruno, Calif., according to local media which also reported that a single female shooter is now dead.

Police received multiple calls from the headquarters, located at 901 Cherry Avenue, at around 12:46pm PST, but by 2pm PST first responders had more-or-less secured the perimeter.

There’s at least four victims, excluding the now-dead shooter, but their health conditions are not known at the time of this writing.

“We did encounter one victim with an apparent gunshot wound towards the front of the business as we arrived,” said San Bruno Police Chief Ed Barberini. “Several minutes later while conducting a search of the premises, officers located a second individual with a gunshot wound that may have been self-inflicted.”

Police found two more victims not long after. Presumably, a third victim was also found and taken to the hospital. There may be other victims who were injured while fleeing the area.

The shooting apparently happened at or near YouTube’s outdoor cafe, reports CBS San Francisco.

The FBI and the BATF were also on the scene, and President Trump was briefed on the situation.

Was just briefed on the shooting at YouTube’s HQ in San Bruno, California. Our thoughts and prayers are with everybody involved. Thank you to our phenomenal Law Enforcement Officers and First Responders that are currently on the scene. — Donald J. Trump (@realDonaldTrump) April 3, 2018

Below is a CBS News feed:

Helicopter footage showed YouTube employees leaving their headquarters in a mass exodus.

According to Fox KTVU:

A witness tells KTVU the shooting was very fast and there was gunfire both inside and outside of the building. Three to five patients are being treated at SF General. Four to five patients are also expected Stanford University Medical Center. There is no word on their conditions.

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