When 15-year-old Pedro Elias Garzon Delvaux realised an Associated Press photo of him at the Louvre on the day of the crown jewels heist had drawn millions of views, his first instinct was not to rush online and unmask himself.

Quite the opposite.

A fan of Sherlock Holmes and Hercule Poirot who lives with his parents and grandfather in Rambouillet, 30 kilometres from Paris, Pedro decided to play along with the world's suspense.

As theories swirled about the sharply dressed stranger in the "Fedora man" shot — detective, insider, AI fake — he decided to stay silent and watch.

How France's crown jewels became an easy target

As French authorities scour Europe for some of their nation's most prized possessions, closer inspection of the Louvre museum itself reveals its vulnerabilities.

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