The fake rock used to spy on Russia

Last updated at 18:52
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The fake rock used by spies

Britain has admitted using a fake rock to spy on Russia.

A ex top Goverment official revealed that the plastic rock was left in a park in the captial Moscow to try and gather information.

The hollow rock contained a recording machine inside - but was found by Russian officials.

Finding the machine had caused an argument six years ago, as no one would own up to who put it there.