SAN BRUNO, Calif. (KGO) -- A San Francisco surgeon treating the victims of the YouTube headquarters shooting spoke out on gun violence in America during a press conference on Tuesday.
A woman opened fire at the company's San Bruno campus on Tuesday, wounding at least three people before she shot and killed herself, police say.
"This is a terrible day in the United States. Once again, we have a mass casualty situation that is confronted here at Zuckerberg SF General Hospital," said Dr. Andre Campbell, a trauma surgeon at Zuckerberg SF General Hospital.
Watch the video above to hear what he had to say.
Click here for full coverage on the shooting at YouTube's headquarters.