Authorities say two teenage suspects opened fire at an Islamic center in San Diego, killing three men before killing themselves. The killlings Monday are being investigated as a hate crime. That's according to Police Chief Scott Wahl. The Islamic Center of San Diego is the largest mosque in San Diego County, according to its website. Wahl says a security guard was among the victims and that the two suspects were found dead in a vehicle nearby. He says about two hours before the attack, the mother of one of the suspects called police to report that her son was missing along with multiple weapons and her vehicle.