 Lawmakers on Capitol Hill say police were suspicious of Donald Trump's attempted assassin on Saturday more than an hour before the young man began shooting. Briefings from top officials yesterday offered some of the most detailed information to date on what happened ahead of the shooting at Saturday's campaign rally in Butler, Pennsylvania. Oklahoma Senator Mark Wayne Mullen said the 20-year-old gunman was identified as suspicious as authorities spotted him with a backpack in what they classified as a range finder. Florida Congressman Brian Mast on Fox News.