FBI agents arrive on the scene of the shooting. They will attempt to piece together the reason's behind the shooter's actions, which remain unexplained. EPA/JOHN G. MABANGLO
Gunshots erupted at YouTube's offices in California on Tuesday, sparking a panicked escape by employees and a massive police response, before the female shooter apparently committed suicide. AFP/JOSH EDELSON
An officer runs past a YouTube sign near the company's complex in San Bruno. Four people were wounded before the shooter killed herself, police and witnesses said. AP Photo/Jeff Chiu
People walk away from the YouTube headquarters area after being searched by police. KGO-TV via AP
Police units gather on the street outside the YouTube offices. EPA/JOHN G. MABANGLO
Trauma surgeon Andre Campbell speaks with reporters outside Zuckerberg San Francisco General Hospital and Trauma Center, where victims were brought. REUTERS/Heather Somerville
Chief of Burlingame police Eric Wollman reunites a YouTube employee with his dog, Kimba, after he was left at the scene following the shooting. EPA/JOHN G. MABANGLO
Heavily armed law enforcement personnel exit an armored vehicle outside the San Bruno building. AP Photo/Marcio Jose Sanchez
FBI agents arrive on the scene of the shooting. They will attempt to piece together the reason's behind the shooter's actions, which remain unexplained. EPA/JOHN G. MABANGLO
Gunshots erupted at YouTube's offices in California on Tuesday, sparking a panicked escape by employees and a massive police response, before the female shooter apparently committed suicide. AFP/JOSH EDELSON
An officer runs past a YouTube sign near the company's complex in San Bruno. Four people were wounded before the shooter killed herself, police and witnesses said. AP Photo/Jeff Chiu
People walk away from the YouTube headquarters area after being searched by police. KGO-TV via AP
Police units gather on the street outside the YouTube offices. EPA/JOHN G. MABANGLO
Trauma surgeon Andre Campbell speaks with reporters outside Zuckerberg San Francisco General Hospital and Trauma Center, where victims were brought. REUTERS/Heather Somerville
Chief of Burlingame police Eric Wollman reunites a YouTube employee with his dog, Kimba, after he was left at the scene following the shooting. EPA/JOHN G. MABANGLO
Heavily armed law enforcement personnel exit an armored vehicle outside the San Bruno building. AP Photo/Marcio Jose Sanchez
FBI agents arrive on the scene of the shooting. They will attempt to piece together the reason's behind the shooter's actions, which remain unexplained. EPA/JOHN G. MABANGLO
