Law enforcement authorities continue examining the motivations of two teenagers who killed three people at the Islamic Center of San Diego.The shooters Caleb Liam Vazquez and Cain Lee Clark died by suicide after attacking the mosque and firing at a bystander.Security guard Amin Abdullah delayed the attackers by returning fire, allowing students inside the building to complete lockdown procedures.The
FBI confirmed the attackers were radicalized online and authored a manifesto promoting white supremacist and anti-Islamic ideology.