TO GO WITH AFP STORY BY ALEXANDRE HIELARD A general view taken on October 29, 2015 shows a hallway to prison cells at the Fleury-Merogis prison, south of Paris. AFP PHOTO / ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
TO GO WITH AFP STORY BY ALEXANDRE HIELARD A general view taken on October 29, 2015 shows a hallway to prison cells at the Fleury-Merogis prison, south of Paris. AFP PHOTO / ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)