Five more people have been arrested in connection with the theft of precious crown jewels from the Louvre.
Masked men broke into the museum in Paris earlier this month and grabbed the Napoleonic treasures during an eight-minute raid.
The suspects stole an estimated €88 million (£76 million) worth of jewels, including crowns, necklaces, earrings using a furniture elevator on October 19.
Prosecutor Laure Beccuau said the arrests were made on Wednesday in France’s capital and surrounding area, particularly the neighbouring Seine-Saint-Denis department.
But speaking to Radio Television Luxembourg on Thursday, the French magistrate said those detained “did not help us find the stolen goods”.
One of the men in custody “was a target of the investigators – we have traces of DNA linking him to the robbery”, Ms Beccuau revealed.
The other four individuals “can give us information about how the theft was carried out”, Ms Beccuau added.
Among the missing items includes a tiara and necklace from the set of Queen Marie-Amelie and Queen Hortense, a diamond "reliquary brooch" and a corsage bow brooch of Empress Eugenie.
Experts fear the items have been broken down into precious metals and gems, smuggled out of France or sold for a fraction of their worth.
On Wednesday, Ms Beccuau said that two men who had been previously arrested on Sunday had “partially admitted” their role.
The pair were caught by police on Saturday, one of whom attempted to catch a flight to Algeria from Charles de Gaulle Airport.
They are set to be charged with organised theft, which carries a 15-year prison sentence, as well as criminal conspiracy, punishable by 10 years.
The Louvre, which receives approximately nine million visitors annually, is home to some of history's most iconic works of art.
The Mona Lisa by Leonardo da Vinci and the ancient Greek sculpture Venus de Milo can be found in the gallery in the city's 1st arrondissement.
