Master jeweler Stephen Portier said the Louvre robbers might recut the stolen gems, which would significantly decrease their value.

No security cameras were monitoring the second-floor balcony where thieves gained access to the Louvre to steal historic jewels worth over $100 million, the museum’s director told a French Senate committee hearing.

DOLTON, Illinois ( WBBM) -- Masked thieves used sledgehammers to break into and steal cash from gaming machines at a bar and lounge in Dolton. Surveillance video from early Wednesday morning at Lucky Star Entertainment on Sibley Boulevard caught the thieves in action. They were wearing dark clothing and ski masks.

How thieves pulled off the extraordinary theft of priceless jewels from the world-famous museum in broad daylight.

In total, thieves stole about €88 million worth of jewels on Sunday, including a necklace Napoleon Bonaparte gave to Marie-Louise of Austria, the tiara, necklace and earrings of Queen Hortense, and a diadem, diamond bow brooch and reliquary brooch that once belonged to Empress Eugénie, wife of Napoleon III.

The party says tracking decoy stolen bikes could help the police uncover wider criminal networks and reduce thefts.

Investigators say criminals are able to intercept goods along the supply chain by impersonating real companies.

A major development in the manhunt to find the four people who robbed the Louvre Museum in Paris has been revealed. According to French police, two traces of DNA were found in one of the helmets and one of the gloves the suspects left behind at the scene of the crime.