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May 20, 2026 The Federal Bureau of Investigation and the Bureau of Alcohol, Tobacco, Firearms and Explosives investigated the San Diego mosque shooting after evidence showed the attackers had been radicalized online Corroborated Information, Memory and Manipulation
The case underscored how online extremist content can translate into lethal violence against a religious minority.
Supporting reportingSurfacings — do not carry alone
Supporting reports
- FBI Investigation into San Diego Mosque Shooting — The FBI, along with the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, is investigating a mass shooting at the Islamic Center of San Diego, where two teenagers, aged 17 and 18, carried out an attack
- FBI Flagged San Diego Mosque Shooter Prior to Attack — Caleb Vazquez, one of the shooters in the deadly attack at the Islamic Center of San Diego, had been previously flagged by the FBI as a potential threat due to his extremist views.
Verified: Corroborated — 2+ independent news desks
Week 70 – 2026-05-16–2026-05-22
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