Law enforcement was aware of San Diego mosque shooter prior to deadly attack - report

Lead

Newly surfaced court documents indicate that one of the two shooters who attacked a mosque in San Diego, California, on Monday was known to law enforcement well before the assault, according to multiple reports. Caleb Vazquez, 18, and Cain Clark, 17, killed three men at the Islamic Center of San Diego before dying of self-inflicted gunshot wounds. Reports now show that Vazquez's behavior had raised alarms as early as January 2025, prompting officials to temporarily confiscate his father's guns.

Coverage comparison

The Guardian, citing US media reports including the New York Times and Bloomberg, reported that local officials were so concerned about Vazquez's fixation on mass shooters and Nazism that they seized his father's firearms. The Jerusalem Post, relying on the New York Times, provided additional details from court filings at San Diego Superior Court, noting that Vazquez had been under police scrutiny long before the shooting.

While both sources agree on the core facts—Vazquez's prior run-ins with law enforcement and the seizure of weapons—the Guardian emphasized the broader context of white supremacist radicalization and parallels to other attacks, whereas the Jerusalem Post focused more narrowly on the legal and procedural aspects of the gun confiscation.

Key Claims

• Radicalization and ideology: According to the Associated Press, as reported by the Guardian, Vazquez and Clark were radicalized online and shared white supremacist, pro-Nazi views. Their online activity included calls for Muslims to be "exterminated" and expressed hatred toward Jewish people, the LGBTQ+ community, Black people, and women.

• Prior law enforcement contact: A protective order filed in January 2025, as detailed in the New York Times and cited by both the Guardian and Jerusalem Post, noted Vazquez's "suspicious behavior idolizing nazis and mass shooters." Court documents show that Vazquez's parents, Marco and Lilliana, owned 26 guns, which were removed to a storage facility and secured away from their son.

• Family statement: The Vazquez family issued a statement apologizing for Caleb's actions and warned about the dangers of online radicalization, as reported by multiple outlets.

• FBI flag: Bloomberg reported, as carried by the Guardian, that Vazquez had been flagged by the FBI as a "potential threat" last year. This claim has not been independently verified beyond the Bloomberg report.

• Link to Christchurch: NPR, cited by the Guardian, noted similarities between the San Diego attack and the 2019 Christchurch mosque massacre, though this is a comparison analysts have drawn, not established fact.

Perspectives

The shooting has refocused attention on the threat of white supremacist violence and the challenges of identifying and intervening with radicalized individuals before they act. Legal experts may examine the effectiveness of California's gun violence restraining order law, which was used to remove weapons from the Vazquez household. Meanwhile, community leaders and advocates for Muslim Americans have called for increased vigilance and support in the wake of the attack.

Correction: An earlier version of this article may have implied that all reports came from a single outlet; in fact, multiple sources, including the New York Times and Bloomberg, contributed to the reporting.