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Today in History: YouTube Headquarters Shooting Injures Three, Shooter Dead

4/3/2026

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Summary

Story summary

On April 3, 2018, Nasim Najafi Aghdam, a 38-year-old Iranian-American woman, opened fire at YouTube's headquarters in San Bruno, California. She wounded three individuals, one critically, before taking her own life. The incident occurred just two days before her 39th birthday, highlighting the tragic nature of the event.

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Story summary

On April 3, 2018, Nasim Najafi Aghdam, a 38-year-old Iranian-American woman, opened fire at YouTube's headquarters in San Bruno, California. She wounded three individuals, one critically, before taking her own life. The incident occurred just two days before her 39th birthday, highlighting the tragic nature of the event.