Strauss-Kahn to be quizzed on prostitution ring: source

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Former IMF chief Dominique Strauss-Kahn is to be quizzed as a suspect about involvement in an alleged illegal prostitution ring, a source familiar with the case said on Saturday.

He has been summoned for questioning on Tuesday and can be held for up to 48 hours without being charged in the police probe into the organisation of sex parties in restaurants and swingers' clubs in Paris, Washington, Madrid, Vienna and Ghent, Belgium.