 In March 2016, Iraqi security forces managed to free a group of Yazidi women held hostage by ISIL in a special operation behind ISILs lines in Mosul.In March 2016, the militant group Kurdistan Workers' Party managed to free 51 Yazidis held hostages by ISIL in an operation called 'Operation Vengeance for Martyrs of Shilo' Three Kurdistan Workers' Party guerrillas died during the operation.In April 2016, the Kurdistan Workers' Party with the Sinjar Resistance Units managed to free another 53 Yazidis held hostages by ISIL.