A French policeman investigates outside the Carlton Hotel on July 28, 2013 in the French Riviera resort of Cannes, after an armed man held up the jewellery exhibition "Extraordinary diamonds" of the Leviev diamond house, making away with jewels estimated to be worth about 40 million euros ($53 million), according to investigators. The lone gunman managed to evade security and escape with a briefcase containing the valuable jewellery. AFP PHOTO / VALERY HACHE (Photo credit should read VALERY HACHE/AFP/Getty Images)
