SAN BRUNO, Calif. - A woman opened fire with a handgun at YouTube's headquarters near San Francisco on Tuesday, wounding three people before shooting herself dead as employees of the Silicon Valley tech company fled into the surrounding streets, authorities said. A YouTube product manager, Todd Sherman, described on Twitter hearing people running, first thinking it was an earthquake before he was told that a person had a gun. It’s not clear if the 30 shots heard by witnesses were shots from the active shooter alone, or a mixture of authorities engaging in gunfire with the active shooter at YouTube’s headquarters. Upon exiting the room he saw “blood drips on the floor and stairs” and heard people say there was a potential shooter before he managed to escape the building. "That morning Aghdam also went to a local gun range, police said today.The San Bruno Police Department received "numerous" 911 calls about a shooting at YouTube's headquarters, said San Bruno City Manager Connie Jackson.San Bruno police officers arrived at YouTube two minutes later and began combing the area for a suspect as employees fled, said Jackson.As officers entered they found one victim at the front of the building with an apparent gunshot wound, Jackson said.Officers searching the building found the suspect dead from an apparent self-inflicted gunshot wound, Jackson said.The shooting left four victims hospitalized: three with gunshot wounds and one with an ankle injury from running from the scene, police said.Meanwhile, officers worked to clear the scene. Andre Campbell, a trauma surgeon who is treating three of the gunshot victims at San Francisco General hospital, expressed his frustration at a press conference: “Once again we are confronted with the specter of a mass casualty situation in the county of San Francisco. Authorities later said there was no immediate threat to the community.Aghdam appears to have carried out the shooting because she was "upset" with YouTube's "policies and practices," authorities said today.Aghdam's brother also told ABC affiliate KGTV in San Diego that she "had a problem with YouTube.
A shooting at YouTube headquarters wounds four. The gunwoman takes her own life.