NEW : FBI says no indication of terrorism . Witness : ` ` It was just a # ##zone down there '' Two gun ##men are recovered at the scene . The third died from a self - inflicted gunshot wound , authorities say .
NEW : FBI says no indication of terrorism . Witness : `` It was just a war zone down there '' Three gun magazines are recovered at the scene . The suspect died from a self-inflicted gunshot wound , authorities say .