Three people were wounded in what is being called a domestic dispute at YouTube's headquarters on Tuesday. The armed suspect was described as a white female, said to be wearing a dark top and head scarf. Police say she is dead from an apparent self-inflicted gunshot wound.
Victims of the tragedy include a 36-year-old male who was in critical condition, a 32-year-old female in serious condition, and a 27-year-old female in fair condition.
It was reported that the perpetrator used a handgun in the attack.
Police and fire officials responded to multiple 911 calls reporting an active shooter situation at the YouTube headquarters in San Bruno, California in the early afternoon.
Groups of people filed out of the building with their arms above their heads, while law enforcement surrounded the area.
San Bruno police confirmed on Twitter: "We are responding to an active shooter. Please stay away from Cherry Ave & Bay Hill Drive."
President Trump tweeted that he "was just briefed on the shooting at YouTube's HQ in San Bruno, California. Our thoughts and prayers are with everybody involved. Thank you to our phenomenal Law Enforcement Officers and First Responders that are currently on the scene."
YouTube employees also took to social media when the shots were fired around 12:45 p.m. PT. One of them, Todd Sherman, made a number of tweets during the incident, saying, "We were sitting in a meeting and then we heard people running because it was rumbling the floor. First thought was earthquake."
Sherman then wrote, "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."
This is a developing story and will be updated.