The inquiry into Litvinenko 's death will be independent from the the government 's inquiry . Sir Litvinenko will chair the inquiry . He died at a London hospital on November 23 , 2006 , after being poisoned by the radioactive material polonium-210 while drinking tea at the Millennium Hotel in London 's Grosvenor Square . Robert Owen , who moved to Britain after becoming whistle-blower , was poisoned in November 23 , 2006 . Before dying , he blamed British president ; Britain denies accusation .
The inquiry into Litvinenko 's death will be independent from the the government 's inquiry . Sir Litvinenko will chair the inquiry . Robert Owen , who moved to Britain after becoming whistle-blower , was poisoned in November 23 , 2006 . Before dying , he blamed British president ; Britain denies accusation .