Kate Middleton and Prince William fear an insider might be leaking information

The Duchess of Cambridge and Prince William have been warned to be wary about who they trust amid fears there could be a mole in the Royal inner circle.

The couple, both 30, has been told to watch who they reveal any personal details to after a series of recent leaks.

Distressed Kate now fears someone may have a secret nasty agenda.

Officials are already questioning staff at the Chateau d'Autet, which belongs to The Queen's nephew Viscount Linley, after Kate was photographed topless on the private property.

'It's been years since the Palace had to deal with a situation like this,' says a source.

'But there 
are suspicions because some things have come out regarding Kate, Wills and Harry that very few people knew about.'

Kate's put on a brave face during the topless photo scandal, but questions have now been raised over who tipped off 
the photographer 
- rumoured to be Irish - that she and Wills were staying at the isolated chateau.

Read more about Kate Middleton and Prince William in Now magazine dated 8 October 2012 - out now!

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