Reportedly, thieves stole wine worth more than €250,000 (£230,000) after burrowing into a private cellar from the catacombs, just 20 meters below Paris.
Police say more than 300 bottles of vintage wine have been carried out through the underground network. The catacomb comprises more than 150 miles (250km) of tunnels running beneath the city.
Paris’s catacombs are off-limits to the public at night and only a little over 1 mile (2km) of tunnels can only be visited during the day with a guide. Many of the tunnels have their corresponding above-ground street names etched into the walls to help visitors find their way around.
Detectives say that the thieves must have identified the cellar they wanted to access under the apartment building. They then drilled into it from the catacombs, where the walls are of limestone (mostly). They are made with valuable grand cru wines.
“We believe they must have made visits before; the suspects didn’t drill that particular wall by accident,” a police spokesman told French media.
The catacombs were adapted from abandoned underground quarries dating back more than 500 years. Within them are galleries containing the bones of about 6 million Parisians, moved there between the end of the 18th century and the middle of the 19th from several of the capital’s cemeteries.
Police teams are investigating the case and trying to collect the links to reach to the thieves.