Car bomb found in London.
A car bomb planted in central London would have caused "carnage" if it had exploded, police sources have said.
Officers carried out a controlled explosion on the device left in the busy Haymarket area of the capital.
"International elements" are believed to be involved, Whitehall sources told the BBC.
The silver Mercedes had been loaded with gas cylinders and has now been removed from the scene, close to Piccadilly Circus.

