Three of the four people whom the police believe carried out the theft have been arrested. But the jewelry is nowhere to be found.

Much like Paris, Las Vegas has also been the scene of some pretty notorious and headline-grabbing break-ins and robberies over the years.

French senators have acknowledged that the Louvre's security is outdated and needs urgent upgrades. On Tuesday, a delegation visited the museum following a recent heist where thieves stole jewels worth 88 million euros in under eight minutes.

France’s culture minister says that the Louvre will install streetside anti-ramming and anti-intrusion devices in the next two months

The Count of Paris, whose great-grandmother once wore the sapphire tiara stolen from the Louvre Museum, has pleaded with the robbers to return the stolen jewels intact for the sake of France's heritage - and for his family.

The Paris prosecutor says five more people have been arrested in the investigation into the theft of crown jewels from the Louvre Museum. The jewels are still missing.