Burning wreckage
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Eyewitness: Helicopter 'plunged to the ground'

16 January 2013 Last updated at 09:04 GMT

A helicopter has crashed into a crane at a building site in south London.

Police said it appeared the helicopter had hit the crane on top of a building. They said it was too early to confirm any casualties.

Ex-BBC producer Paul Ferguson said the helicopter "plunged straight into the ground".