"Searches last night and overnight did not allow us to find the goods," Beccuau said.

Five more people have been arrested in the investigation into the theft of crown jewels from the Louvre Museum, the Paris prosecutor announced Thursday.

Experts say the jewels – among them an emerald necklace set with more than 1,000 diamonds gifted by Napoleon to his second wife – were likely to be dismantled for their raw materials.