Witness claims to see shooter moved between rooftops during Trump rally

Two witnesses at Donald Trump's election rally in Pennsylvania, where he was attacked, claimed to have seen the shooter, with one recalling how the gunman moved from roof to roof, apparently scouting for a perfect perch to shoot at the former US president.

The FBI on Sunday identified the gunman as Thomas Matthew Crooks, 20, from Bethel Park, Pennsylvania. Crooks, armed with an AR-style rifle, was killed by Secret Service personnel. He fired multiple shots at the stage from an elevated position outside of the rally venue, the agency said.

The gunman was able to get close enough to shoot and injure Trump is seen as a huge failure of the security agencies tasked with providing cover for him ahead of the election.

The gunman was on a rooftop approximately "200 to 250 yards" from where the former US president was addressing his supporters, US media reported.

According to an attendee named Ben Macer, he was up along the fence line and "saw the guy move from roof to roof", CBS News ...