![Watch: Witness tells BBC he saw gunman on roof](https://cdn.newsserve.net/en/knowledge/Donald-Trump_20190129.jpg)
Watch: Witness tells BBC he saw gunman on roof
A man with a rifle was seen on a rooftop minutes before shots were fired at a Trump rally, a witness says.
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A man with a rifle was seen on a rooftop minutes before shots were fired at a Trump rally, a witness says.
Full ArticleGreg, who was outside the rally, tells the BBC he tried to alert the police.