Paris — French authorities may well manage to track down and arrest the thieves who pulled off an audacious robbery of royal crown jewels from Paris' iconic Louvre museum, but they're unlikely to recover the national treasures, a criminologist told CBS News on Tuesday. The heist took place on Sunday, in broad daylight with tourists in the museum, but nobody was hurt.

"We will catch them," Alain Bauer, a professor of criminology at France's National Conservatory of Arts and Crafts, told CBS News.

But he added: "I don't think we will capture the jewels."

See the jewels the Louvre thieves got away with — and one they didn't

Bauer said a lot of DNA was left at the scene by the robbers, including on the crown of the empress Eugénie, which was left behind by the thieves as they made their

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