 The French concentration camps used by the Vichy regime to intern Jews, Gipsies, Spanish Republicans, Resistants and others, were now used to detain presumed collaborationists.In Paris, these included the Velodrome d'Hiver, the Drancy internment camp (managed by the Resistance until the arrival of the gendarmerie on 15 September 1944) and the Fresnes prison, which held Tino Rossi, Pierre Benoit, Arletty, and the industrialist Louis Renault.The 4 October 1944 ordinance authorised prefects to intern dangerous prisoners until the end of hostilities.