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Nigeria blast eyewitness: 'I almost cried'

26 August 2011 Last updated at 15:14 BST

A car bomb attack has struck the UN building in the Nigerian capital Abuja, killing at least 16 people.

The powerful blast wrecked the bottom floor of the building.

A witness, named only as Raphael, spoke of his fear and anguish at the scenes he was confronted with.