A woman who shot three people before turning the gun on herself Tuesday at the California headquarters of tech company YouTube visited a local gun range before the attack, according to police.

Chaos erupted when a shooter, identified by police as 39-year-old San Diego resident Nasim Najafi Aghdam, opened fire in a courtyard on YouTube’s campus.

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State Rep. Kimberly New, R-Villa Rica, stands in the House of Representatives during Crossover Day at the Capitol in Atlanta on Thursday, March 6, 2025. (Arvin Temkar/AJC)

Credit: Arvin Temkar/AJC