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Lawsuit claims mental health facility ignored warnings before San Diego mosque attack

A gunman's mother alleges a treatment center failed to intervene despite federal alerts prior to the shooting.

Updated Sep 6, 2026 · 02:18 UTC2 reports

The short version

The mother of San Diego mosque gunman Caleb Vazquez filed a lawsuit alleging Park Mental Health Treatment failed to act after federal authorities issued warnings.[ABC News · Associated Press]
Federal agents contacted Vazquez's parents on May 14 regarding his online behavior days before the attack.[ABC News]
On May 18, Vazquez and another teenager fatally shot three individuals at a mosque before killing themselves.[ABC News · Associated Press]
Park Mental Health rejected the claims in the suit, stating that the facility and its personnel bear no responsibility.[ABC News · Associated Press]

Caleb Vazquez's mother filed a lawsuit on August 31 alleging Park Mental Health Treatment of San Diego failed to act on warnings and intervene regarding her son.[ABC News · Associated Press]
The FBI warned Vazquez's parents on the evening of May 14 about his online activity.[ABC News · Associated Press]
Vazquez and 17-year-old Cain Clark killed three people at a San Diego mosque on May 18 before dying by suicide.[ABC News · Associated Press]
Park Mental Health stated that neither the center nor its staff are responsible for Vazquez's actions, maintaining that only he and his coconspirator bear blame.[ABC News · Associated Press]

Whether Park Mental Health received adequate actionable notice from the mother or had legal liability to prevent the shooting remains disputed in court.[ABC News · Associated Press]

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.