President Serzh Sargsyan convened a special advisory session regarding the crash of the TY-154 air plane on a flight to Yerevan from the Iranian capital of Tehran. Details of the crash were presented by representatives of the National Security Service and the RoA Civil Aviation Department. The President's press service has reported that a special commission headed by the RoA Prime Minister and the Minister of Territorial Administration will be formed to investigate the deadly air disaster.