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Police confirmed that Aghdam was the suspect behind the Tuesday, April 3 attack, critically wounding one man and seriously harming two women. The 39-year-old began shooting at YouTube’s offices in Silicon Valley, California, where 2,000 people work. Her assault only came to an end when she shot and killed herself. San Bruno Police confirmed it is investigating Aghdam’s motive for carrying out the attack.

In a statement, the department said: “The San Bruno Police Department is investigating a motive for this shooting. “At this time there is no evidence that the shooter knew the victims of this shooting or that individuals were specifically targeted.” Who is Nasim Aghdam? Nasim Najaf Aghdam, from San Diego, ran a website called NasimeSabz.com, meaning "Green Breeze" in Persian.

PA/GETTY Who was Nasim Aghdam? Vegan animal activist revealed as Youtube California HQ shooter

On it she described herself as a Persian animal rights activist and vegan athlete but she interspersed these with tirades against YouTube. The disgruntled vlogger accused the social channel of taking down her videos, blaming it on alleged censorship and discrimination against her content. The suspect wrote: “This video got age restricted after new close-minded youtube employees, got control of my farsi YouTube channel last year 2016 and began filtering my videos to reduce views and suppress and discourage me from making videos.” She also wrote: "There is no free speech in real world & you will be suppressed for telling the truth that is not supported by the system.

YouTube incident: 'Active shooter' at HQ in northern California Tue, April 3, 2018 Police confirm an ‘active shooter’ at YouTube HQ in Silicon Valley Play slideshow Twitter 1 of 13 Five people are being treated after a shooting at YouTube's headquarters

"Videos of targeted users are filtered & merely relegated, so that people can hardly see their videos! Aghdam’s YouTube channel was removed this morning. Aghdam also had an account on video site Dailymotion where she posted workout videos in addition to a parody on Justin Bieber’s What Do You Mean song. She was quoted in an August 2009 article in The San Diego Union-Tribune about the protest of pigs in military-trauma training organised by People for the Ethical Treatment of Animals (PETA).

GETTY Who was Nasim Aghdam? Armed police at the scene of the shooting