Investigation
On the request of the Novaya Gazeta newspaper staff the Investigative Committee of the General Prosecutor's Office of Russia opened the investigation of his death anew on 27 October 2007. In April 2008 an Investigative Committee official said that there would be another test carried out on his tissue to ascetain whether there had been a case of poisoning. The Prosecutor General of Russia has closed the criminal case in April 2009 after the conducted examination has failed to prove poisoning or a violent death.
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