Amateur footage appears to show a number of police cars chasing a vehicle along a road near the US Capitol building.
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The 270 victims of the Lockerbie bombing have been remembered today, 26 years to the day that they lost their lives in the air disaster.
Actress Billie Whitelaw, who starred in films including The Omen, has died aged 82.
Scotland's top prosecutor and an FBI director met to discuss the progress of further investigations into the Lockerbie bombing.