BBC Media caption, Donald Trump ducks as loud bangs heard during rally Live Reporting
Witness says he saw man with gun on building roof published 00:32
Trump pumps his fist as he is rushed into a car
One witness, Greg, told the BBC he was outside the rally and could only hear the former president talking, when he noticed a man on top of a roof.
"We noticed the guy crawling up the roof of the building beside us, 50 feet away from us," Greg said. "He had a rifle, we could clearly see him with a rifle."
