Update: Four People Shot at YouTube Headquarters and Suspect Dead

Police in San Bruno, California have just briefed reporters following a shooting incident at You Tube's headquarters Tuesday afternoon. 

Four victims were transported to local hospitals for treatment, the suspected shooter, a female, is dead from an apparent self-inflicted gunshot wound according to the police chief of San Bruno.

Officers are still going through the building escorting employees out and checking for any more possible victims or suspects. 

The gunfire reportedly started shortly before 1pm. Witnesses on the scene reported there was a luncheon going on inside the building when the gunshots were heard. 

A number of people sent out tweets showing people being evacuated from the media company's building. SEE BELOW.