Police in the San Francisco area are responding to an active shooter at the headquarters of YouTube.<br />According to San Bruno police, the shooting took place at a building located on the corner of Cherry Ave. and Bay Hill Drive.<br />A product manager with YouTube tweeted during the incident, adding that he saw blood on the floor and stairs as he exited the building.<br />A local CBS affiliate has reported that causalities have been transported to a hospital in San Francisco.<br />Other local television crews captured YouTube employees walking out of the building with their hands raised. <br />
