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London riots: Police urge calm in Tottenham

7 August 2011 Last updated at 01:33 BST

Police are calling for calm in Tottenham in north London, where a tense standoff is taking place.

Earlier three police cars, a bus and a building were set alight following a protest against the fatal shooting of 29-year-old Mark Duggan on Thursday.

Cdr Stephen Watson from the Metropolitan Police has urged people to avoid the area.