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Teen Suspects Kill Three in San Diego Mosque Shooting; Radicalized Online

May 20, 2026

Summary

Three people, including a security guard, were killed in a shooting at the Islamic Center of San Diego by two teenage assailants, aged 17 and 18. Authorities believe the suspects were radicalized online and shared a manifesto expressing racist ideology.

How coverage differs

  • Center: Online Radicalization Fueled Deadly Mosque Attack, Officials Confirm Center outlets report on the San Diego mosque shooting where two teenage suspects, aged 17 and 18, killed three people, including a security guard. They note authorities believe the assailants were radicalized online, sharing a manifesto with racist ideology.
  • Right: Disturbing Details Emerge on Shooters' Hatred, Pre-Attack Behavior Right-leaning outlets extensively cover the San Diego mosque shooting, detailing the suspects' manifesto which expressed hatred towards 'everyone' and the FBI's investigation. They highlight personal details about the killers, such as Cain Clark's neighbor's encounter and the raid on Caleb Vasquez's $1 million home.

Coverage by lane

Center

  • Teen Suspects in San Diego Mosque Shooting Likely Radicalized Online, Officials Say

Right

  • Cain Clark’s neighbor reveals haunting encounter with San Diego mosque shooter day before deadly rampage
  • San Diego mosque shooters hated EVERYONE, according to manifesto being combed by FBI after massacre, as killer teen's $1m home is raided by cops
  • San Diego mosque shooter Caleb Vasquez encouraged Cain Clark to kill him after mass shooting

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