The lead examining magistrate in a corruption case against former French President Nicolas Sarkozy has received a death threat in the post.

BBC: Sarkozy Bettencourt: Lead judge receives death threat

Adding to the party's woes, Mr Sarkozy, who has stayed out of the dispute in public, was questioned for 12 hours on Thursday by an examining magistrate over alleged illegal party donations during his 2007 presidential campaign.

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He told doctors examining him that the health of district magistrate R Vineel Krishna was also good.

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