The Louvre remained closed on Monday as police continued their investigation. Photo by DIMITAR DILKOFF/AFP via Getty Images/Postmedia files

It took just seven minutes for robbers armed with disc grinders to get in and out of the world-famous Louvre museum in Paris with a stash of royal necklaces, tiaras and earrings .

They left the nearby 140-carat “Régent” diamond untouched, dropped a crown with more than 1,000 diamonds, and fled, abandoning a yellow vest with DNA traces — giving hope to shamefaced politicians and police that a massive security lapse won’t lead to a permanent loss.

Interior Minister Laurent Nunez said he was “hopeful that we will very quickly find the perpetrators and, above all, the stolen items.”

At around 9:30 a.m. on Sunday, two perpetrators parked a f

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