During the flight of the rocket "Soyuz-FG" not open nozzle disposed side block of the first stage of the rocket, said the head of the emergency Commission Oleg Skorobogatov at a press conference in the mission control Center. This was the cause of the accident. according to his statement, an emergency situation is made at 118 seconds into the flight. Skorobogatov noticed that the sensor of the missile could be broken only At its Assembly at Baikonur. When you start side block hit on the Central unit and cracked fuel tank, he added. The Commission has developed tips for re-examination of already collected missiles. Their disassembly and reassembly will keep under control the most meticulously and among them fixing all of the stages in photos and videos." like we were two missiles. One is the completion in the Guiana Center, and the second at the Baikonur cosmodrome for the launch of transport cargo vehicle " Progress ",