1 dead, 4 injured in shooting at YouTube headquarters in San Bruno

SAN BRUNO, Calif. (KGO) -- A woman opened fire at YouTube's headquarters in the San Francisco Bay Area Tuesday, wounding at least three people before she shot and killed herself and prompted panic as employees hid and tried to flee, police and witnesses said.[br /][Ads /][br /][br /][br /][b]RELATED: [url HREF="http://abc7news.com/sources-youtube-shooter-identified-as-user-nasim-aghdam/3298575/" TARGET="" REL=""]SOURCES: YouTube shooter identified as user Nasim Aghdam[/url][/b][br /][br /]Officials say three people were wounded by gunshots, and another person suffered a twisted ankle.[br /][br /]San Bruno Police Chief Ed Barberini initially told reporters Tuesday that four people were wounded. He later clarified that one person who was taken to the hospital had a twisted ankle or similar injury but wasn't shot.[br /][br /][b]RELATED: [url HREF="http://abc7news.com/good-samaritans-help-youtube-shooting-victims-in-san-bruno/3298302/" TARGET="" REL=""]Good Samaritans help YouTube shooting victims in San Bruno[/url][/b][br /][br /]Two federal law enforcement officers tell ABC News that early indications point to the shooting being the result of a domestic situation. It does not appear to be terror-related.[br /][br /]Officers and federal agents swarmed the company's headquarters complex in the city of San Bruno as multiple 911 calls came in reporting gunfire at 12:46 p.m.[br /][br /][b]PHOTOS: [url HREF="http://abc7news.com/photos-shooting-at-youtube-headquarters-in-san-bruno/3298317/" TARGET="" REL=""]Powerful images from shooting at YouTube HQ in San Bruno[/url][/b][br /][media ID="3298459" /][br /][br /]The City of San Bruno Police Department issued a statement Tuesday afternoon, confirming a total of four people were taken to local hospitals. Three of those injured had gunshot wounds.[br /][br /]Brent Andrew, a spokesperson at San Francisco General Hospital, says they're treating three people - a 36-year-old man in critical condition and two women, ages 32 and 27, who are in serious and fair condition.[br /][br /]San Bruno Police Chief Ed Barberini said one victim was found near the entrance, and two others were injured at a nearby business.[br /][br /]SKY7 was over the campus, where law enforcement was seen approaching the building with guns drawn. About 200 employees were evacuated with arms overhead, and the campus was flanked with dozens of police cars and emergency vehicles. Officers patted down people to make sure none had weapons.[br /][br /][b]VIDEO: [url HREF="http://abc7news.com/video-man-texts-family-from-youtube-shooting-i-am-safe-for-now-/3297666/" TARGET="" REL=""]Man texts family from YouTube shooting, 'I am safe for now'[/url][/b][br /][br /]As early details emerged during then then-active shooting situation, a longtime and trusted law enforcement source told ABC7 News investigative reporter Dan Noyes that the suspected shooter was a white, adult female wearing a black top and head scarf. That individual has not yet been identified.[br /][Ads /][br /]YouTube employee Vadim Lavrusik posted on Twitter that he heard gunshots and saw people running. He said he was barricaded in a room with his co-workers before being safely evacuated.[br /][br /]Will Hudson said a friend who works for YouTube texted him about the shooter.[br /][br /]"I think there might be a shooter in my building," read one text. "The fire alarm went off so we started to evacuate and then people (started) running saying there was a shooter."[br /][br /][b]VIDEO: [url HREF="http://abc7news.com/video-aerial-footage-of-active-shooting-situation-at-youtube-hq/3297598/" TARGET="" REL=""]Aerial footage shows active shooting situation at YouTube HQ[/url][/b][br /][media ID="3297777" /][br /][br /]The mother of a 30-year-old YouTube employee shared texts messages from her son with ABC7 News. He texted his mother that he was eating lunch at an outdoor courtyard when shots rang out around 12:50 p.m. He told her he was hiding in a bush and was "safe for now."[br /][br /]People nearby the campus have posted photos and information from the scene on social media, showing police cars surrounding the facility. About 1,700 people work at the campus.[br /][br /]Google, which owns the world's biggest online video website, posted on Twitter that the company is coordinating with authorities. The Bureau of Alcohol, Tobacco, Firearms and Explosives also said it responded to the shooting at YouTube's suburban campus.[br /][br /][twitter ID="981260443606958080" /][br /]The White House said President Donald Trump was briefed on a shooting and that officials were monitoring it.[br /][br /]Andre Campbell, a trauma surgeon who treated the victims at the hospital, said the shooting was another "sad day" for America.[br /][br /][b]RELATED: [url HREF="http://abc7news.com/twitter-tries-to-stop-misinformation-following-youtube-shooting/3298130/" TARGET="" REL=""]Twitter tries to stop spread of misinformation followin YouTube shooting[/url][/b][br /][br /]"This is unfortunate, and it continues," he said, referencing the Parkland, Las Vegas and Pulse nightclub shootings.[br /][br /]Hudson said his friend made it safely back to San Francisco and was in contact with his family. Hudson said he's become used to hearing about gun violence but has never been so close to it before.[br /][br /]"It just feels strange. It feels like it could really be anyone. That's really the strangeness of it," he said.[br /][Ads /][br /]Officials say they will be at YouTube's headquarters through the night as their investigation continues.[br /][br /][b][url HREF="http://abc7news.com/tag/youtube-shooting/" TARGET="" REL=""]Click here[/url] for full coverage on the shooting at YouTube's headquarters.[/b] ([br /][br /][twitter ID="981318562521296896" /][br /][twitter ID="981318124971597825" /][br /][twitter ID="981267668350115840" /][br /][twitter ID="981287536520847360" /][br /][twitter ID="981265855483863040" /][br /][twitter ID="981260443606958080" /][br /][twitter ID=" 981259304408788993" /][br /][twitter ID="981267668350115840" /][br /][twitter ID="981275549564678144" /][br /][br /]Associated Press reporters Jeff Chiu and Sudhin Thanawala contributed to this report[/i]