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.
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Warmer with a mild, muggy night ahead
The headteacher of Saffie Rose Roussos's primary school has paid tribute to the little girl who was "beautiful in every sense of the word".
Ten people have died on the mountain so far this climbing season - four more than mountaineering officials expect in a typical year.