The three men killed in Monday's shooting at the Islamic Center of San Diego have been identified, as a security guard who was killed is being hailed as a hero for his courage during the attack.

SAN DIEGO — More than a year before Caleb Vazquez and a friend attacked a mosque in San Diego and killed three people, the police were so alarmed by Vazquez’s behavior that they secured a court order ...

They will think of Amin Abdullah, 51, the security guard who made sure the mosque’s campus, with more than 100 schoolchildren on site, was locked down before he confronted the heavily armed teenagers ...