Four people now face charges in the Louvre Museum theft case as Paris prosecutors expand an investigation into an organized crime conspiracy at the world-famous gallery.

Thieves broke into the Louvre in Paris — the world's most visited museum — early Sunday morning. Museum officials said they stole jewelry and fled.

The French police have arrested five more people in connection with the spectacular jewel theft at the Louvre, including one who is believed to have been among the thieves at the scene, the prosecutor overseeing the investigation said on Thursday.

Much of the blame has been placed on the Louvre’s security camera system. The building’s exterior is “surrounded by cameras,” but there “were not enough officers to continuously monitor the feeds.” Other factors include the museum’s ongoing construction,

Five more arrests made in Louvre heist investigation as French crown jewels worth $102 million remain missing after daring daytime theft from Paris museum.