A new system for calling for witnesses, called “in search of clues” was presented this Tuesday April 2 by the Ministries of the Interior and Justice. The system is intended to benefit the national serial or unsolved crimes center of the Nanterre public prosecutor's office, better known as the "cold cases center" A first call for witnesses was broadcast this Tuesday concerning three serial rapes which occurred in 2002 in Seine-et-Marne then in 2011 in Gironde and Landes.