PHOTOS: YouTube Headquarters Shooting Scene

An active shooter at the YouTube headquarters in San Bruno, California, was reported to police at 12:46 p.m. local time via numerous 9-1-1 calls. The San Bruno police department responded to the scene and Police Chief Ed Barberini has since confirmed that four people have been injured and that one person is dead — a female, who is believed to be the suspect.

According to ABC 7, police have confirmed that the suspect “is a white, adult female wearing a dark top and head scarf.”

According to TMZ, the San Bruno police said that there was a woman down “with a gunshot wound to her chest.” Police also said that a handgun was found near the woman’s body.

“We did encounter one victim with an apparent gunshot wound, towards the front of the business as we arrived. Several minutes later, while conducting a search of the premises, officers located a second individual with a gunshot wound, that [may have been] self inflicted. We are still working on confirming that. Two additional victims were located several minutes later at an adjacent business. The extent of all the injuries of our victims, are unknown right now. They were all transported for emergency medical care… We have four victims who have all been transported for gunshot-related [injuries],” San Bruno Police Chief Ed Barberini said during a press conference.

At least one of those victims is listed in critical condition, according to Brent Andrew from San Francisco General Hospital.

“We received three patients,” Andrew told the media during a press conference. He added that a 36-year-old male is listed in critical condition at this time. The two other patients are female.

YouTube product manager Todd Sherman posted the following on Twitter.

“We were sitting in a meeting and then we heard people running because it was rumbling the floor. First thought was earthquake. After [exiting] the room we still didn’t know what was going on but more people were running. Seemed serious and not like a drill. We headed towards the exit and then saw more people and someone said that there was a person with a gun. Shit. At that point every new person I saw was a potential shooter. Someone else said that the person shot out the back doors and then shot themselves. I looked down and saw blood drips on the floor and stairs. Peaked around for threats and then we headed downstairs and out the front.”

“YouTube, which is owned by Google, operates out of San Bruno, a suburb of San Francisco that is about 10 miles from the city. The company has several hundred employees but it is unclear how many of them are based out of the headquarters as YouTube also has large operations in Los Angeles and New York,” according to The Hollywood Reporter.

This story is developing.