On 20 August 2014 , a Hamas official Salah al-Arouri , who had been publicly identified Check as the mastermind of the operation Military_operation several days after the kidnapping Kidnapping , on 19 June , said that the organization Arranging 's armed Bearing_arms wing , the Izz ad-Din al-Qassam Brigades , was behind the kidnapping Kidnapping and murder Killing .

al-Arouri , one of the founders of Hamas 's military wing , made Manufacturing his comments Statement at a conference Communication in Istanbul , where he lives in exile .