ISIS claimed responsibility.[35] France March 2018 Trèbes hostage crisis The Trèbes hostage crisis unfolded in the southern French town of Trèbes on 23 March 2018, but began hours earlier in Carcassonne, when 26-year-old French-Moroccan Redouane Lakdim killed a motorist and injured his passenger, then stole the car and attacked four French police officers, wounding one.