 The committee completed examination of the accident site and was making preparations for moving the aircraft.The United States National Transportation Safety Board, representing the State of Design and State of Manufacture of the aircraft, and the United Kingdom's Air Accidents Investigation Branch, representing the State of Registry, were invited to participate in the investigation.The Investigative Committee of Russia also launched a probe into the crash, with a Southern Transport Department official stating that "a criminal investigation has been opened into the emergency landing ... on suspicion of inadequate services with a risk to clients' health."