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.