PHOTOS: Shooting at YouTube headquarters in San Bruno

SAN BRUNO, Calif. (KGO) -- Police and witnesses say a woman opened fire at YouTube headquarters in San Bruno, wounding three people before fatally shooting herself as terrified employees huddled inside.

Watch the video player above for a look at the powerful images from Tuesday's shooting.

Click here for full coverage on the shooting at YouTube's headquarters.

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Law enforcement stands watch outside of the YouTube headquarters on April 3, 2018 in San Bruno, California.

Justin Sullivan/Getty Images