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
Relatives of Annie McCourt picketed the Regulation and Quality Improvement Authority in Belfast.
The Labour leader also called for a fresh approach to resolving the conflict in Syria.
Nigel Ingram and John Blight looted HMS Hermes at the bottom of the English Channel in 2014.