The attack unfolded just before noon on Monday at the Islamic Center of San Diego in the Clairemont neighborhood when Cain Clark, 17, and Caleb Vazquez, 18, arrived with multiple firearms stolen from Clark's home. Three adult men working at the center died in the assault, all shot outside the building. Among them was a security guard whose identity has not yet been released but whom San Diego Police Chief Scott Wahl credited with preventing a massacre of the children and worshippers inside. The timeline reveals a horrifying near miss for law enforcement. At 9:42 AM, Clark's mother contacted SDPD to report her son had disappeared with multiple guns and her car, warning he was suicidal and likely with a friend. Officers were actively searching the area and interviewing the mother when the first shots rang out at 11:43 AM, just blocks away from where they stood. Police reached the scene within four minutes, but all three victims were already dead. The two shooters had fled to their vehicle and killed themselves before officers could engage. Chief Wahl confirmed investigators discovered what he described as hate rhetoric in the suspects' car, and NBC News reported authorities are examining possible anti Islamic writings found with the bodies. San Diego Mayor Todd Gloria, a Democrat, declared at an afternoon press conference that the shooting would be investigated as a hate crime. "There was definitely hate rhetoric that was involved," Gloria stated. The FBI has joined the investigation, standard procedure for potential domestic terrorism cases targeting religious institutions. Aerial footage captured armed security personnel evacuating school aged children from the Islamic Center in the hours after the shooting. The center operates a school serving the local Muslim community, and dozens of children were on site during the attack. The fact that the security guard engaged the shooters outside the building, preventing them from entering where children were present, has led investigators to believe the death toll could have been catastrophically higher. No officers discharged weapons during the response. The suspects' self inflicted deaths in the vehicle eliminated any opportunity for interrogation that might have clarified their specific planning, ideology, or whether they acted entirely alone. Law enforcement is now reconstructing the teenagers' movements, communications, and radicalization pathway. The Islamic Center had received no specific threats prior to the attack, according to authorities, raising questions about whether the target was chosen opportunistically or represented longer term planning.