Former French president Nicolas Sarkozy attends the inauguration of the Institut Claude Pompidou, a new centre for care and research of Alzheimer disease, in Nice in this March 10, 2014 file photo. Sarkozy was held on July 1, 2014 for questioning into suspicions that a network of informers kept him abreast of a separate inquiry into alleged irregularities in his 2007 election campaign, a legal source said. [Photo/Agencies]
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