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Alexander Litvinenko death: Inquiry to be held

22 July 2014 Last updated at 21:51 BST

A public inquiry will be held into the death of the Russian dissident Alexander Litvinenko, the UK Home Secretary Theresa May has announced.

Mr Litvinenko, a former KGB officer who became a British citizen, died in 2006 in a London hospital after he was poisoned with radioactive polonium.

The investigation will examine whether the Russian state was behind his death.

Gordon Corera reports.