Police have warned Big Brother broadcaster Channel 5 over the risks of having a former police officer as a contestant.
Scotland Yard said it had contacted the television station after the Daily Star claimed a detective constable who it says "played a key role in Operation Yewtree" - the investigation into Jimmy Saville - will be appearing on the show.
Scotland Yard said it had made the broadcaster aware of "potential risks" to ongoing police investigations and reminded the company of its "responsibility".
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