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Excerpt from www.washingtonpost.com
Seconds after he opened fire from a rooftop outside the rally’s security perimeter Saturday evening, using an AR-style rifle that was legally purchased by his father, he was fatally shot by the Secret Service, authorities said.
“At this time, the information that we have indicates that the shooter acted alone and that there are currently no public safety concerns,” FBI special agent in charge Kevin Rojek said in a telephone briefing. “At present we have not identified an ideology associated with the subject, but I want to remind everyone that we’re still very early in this investigation.”