The discovery of a "target list" containing religious institutions, courthouses and other sites compiled by the gunman in a mass
shooting at a
California food festival has prompted the
FBI to open a domestic terrorism case.
Shooter Santino William Legan, 19, fatally shot three people, including two children, with a Romanian-made, AK-47-style rifle before turning the gun on himself on July 28 at the popular Gilroy Garlic Festival.
Legan appeared to be interested in conflicting ideologies, but authorities still have not determined a motive for the attack, John Bennett, the FBI's agent in charge in San Francisco, said Tuesday.