What seems like the plot of a new Ocean’s franchise flick has turned into a international nightmare for France.

Police are scrambling to find the thieves that pulled off a stunning heist at the Louvre Museum in Paris on Sunday. The foursome managed to snag eight pieces of priceless, historic jewelry in broad daylight from the institution in a bold move that has left France in shock, The New York Times reported.

At 9:30 a.m. yesterday, the burglars parked a truck, which had an electric ladder attached, at a southern corner of the Louvre. Two of the robbers then climbed the ladder to access the Galerie d’Apollon, located on the museum’s second floor and home to its collection of crown jewels; the pair used power tools to smash a window and gain access. From there, the duo broke into two display cases, grabbed various items, and fled the way they entered, ultimately leaving the scene on motorcycles. In perhaps the most shocking detail, the theft took a mere eight minutes to complete.

As for what was nabbed, the group managed to get away with a rare treasure trove of artifacts. That includes a jewelry owned by Napoleon III’s wife Empress Eugénie, including a tiara and a brooch, as well as a royal emerald necklace and matching earrings from the collection of Empress Marie-Louise, wife of Napoleon I. A royal sapphire tiara, necklace, and matching earring owned by Queen Marie-Amélie, the last queen of France, and Queen Hortense, a queen of Holland (and stepdaughter to Napoleon I), were also nabbed. In a stroke of luck, the thieves dropped Empress Eugénie’s crown (which was later found by police outside the museum), a memento that is home to 1,354 diamonds, 1,136 rose-cut diamonds, and 56 emeralds. The exact value of the stolen goods has not been disclosed, though their historical value makes them priceless; one of the items, Empress Eugénie’s bow brooch with jeweled tassels, is said to be worth around $7.8 million alone.

The Louvre, which shut its doors after the heist took place, has remained closed on Monday as well. According to police, it’s likely that organized crime was behind the robbery. Now, in addition to scouring Paris to find traces of the artifacts, officials are concerned that the thieves could potentially break down the pieces and sell the stones on the black market. Overall, though, not a lot has been learned about the heist, an act that has led to many questions about the Louvre’s security.

“This morning, the French people, for the most part, feel as though they have been robbed,” Gérald Darmanin, France’s justice minister, said on the radio Monday, according to The Times. “In the same way that when Notre-Dame burned, it was our church that was burning—even if you weren’t Catholic—such an incredible jewelry robbery at the Louvre looks bad.”

The museum had followed all the proper protocols in the wake of the robbery, according to France’s Ministry of Culture. Two security alarms sounded upon the break in of both the window and the display cases, and the security staff successfully ensured that no one was hurt during the heist.

The rare jewelry aren’t the only historic items to vanish this month. Last week, it was announced that a Pablo Picasso painting had disappeared on its way to an new exhibition in France. And, like the Louvre items, the piece has yet to be found.