<br /> <p>One person was killed and at least three others were injured in a shooting at YouTube’s headquarters in San Bruno, California, on April 3.</p><p>Police said they believe the female shooter killed herself after firing shots at several YouTube employees in the building, ABC news reported</a>.</p><p>The attack left a 36-year-old man in a critical condition and two women, aged 32 and 27, were also seriously injured, the report said.</p><p>These videos show a SWAT team climbing up the stairs to the entrance of YouTube HQ. Credit: Eddie DiSalvo via Storyful</p><br />
