An official said the organiser of a diamond exhibit and sale has more than doubled the estimated value of diamond jewellery stolen in a brazen weekend heist at a luxury hotel on the French Riviera to some $136 million.

Police had previously said Sunday’s theft at the Carlton Intercontinental Hotel had netted 40 million ($53 million) in loot even at that level, one of biggest jewellery heists in recent years.

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