Amateur video from Washington appears to show a police car speeding in to a barrier after an incident which saw Capitol Hill on lockdown.
ITV News cannot independently verify this video.
More top news
Three South Wales Police officers who received complaints about Ian Watkins four years before his arrest will face disciplinary proceedings.
Ryan Giggs has ended his long association with Manchester United, the Premier League club have confirmed.
Conservative leadership hopeful admits he "did everything possible" to avoid joining the race but claims he is the best person for the job.