2026 San Diego Mosque Shooting

The story so far

As of August 31, 2026

Two teenagers, Cain Lee Clark, 17, and Caleb Liam Vazquez, 18, opened fire outside the Islamic Center of San Diego on May 18, killing three men before dying by suicide in a nearby car. The victims were identified as Amin Abdullah, the mosque’s security guard; Nader Awad, a kindergarten teacher; and Mansour Kaziha, who managed the center’s store. Investigators found a 75‑page set of writings steeped in hostility toward Muslims, Jews, Black people and others, along with Nazi symbols and messages on weapons and gear. The FBI said the pair met online and were radicalized there.

The case has now widened beyond San Diego. A Forsyth County, North Carolina grand jury indicted 17‑year‑old Sarah Lindsay Santiago on three counts of first‑degree murder and one count of conspiracy, alleging she worked with the gunmen to record and distribute a livestream of the attack and to publish their writings. She was arrested last week, is being tried as an adult in North Carolina, and faces a potential sentence of life without parole if convicted.

This turns the story from a local hate‑motivated shooting into a networked crime built for online reach, with a third teenager 2,000 miles away charged as a co‑participant. That aligns with what was already known: the shooters’ focus on a manifesto and on spectacle, and the discovery of more than 30 firearms tied to the investigation. It also sits against earlier warning signs that did not stop the attack, including a 2025 court order that removed 26 guns from Vazquez’s family after police documented his fixation on Nazis and mass killers, and a 9:42 a.m. call from Clark’s mother on the day of the shooting reporting her son missing with guns and a car.

What is at stake now is whether the justice system can treat the staging and amplification of an attack as part of the killing itself, and whether mapping the online ties that connected these teenagers can blunt the copycat pull of livestreams and manifestos. The shooters are dead, but the hate‑crime investigation continues around their writings, their online contacts, and the path of the weapons. Santiago’s case moves forward in North Carolina, the first test of that wider accountability.