Alexander Litvinenko files to remain secret

Evidence that is alleged to expose the ties between MI6 and poisoned spy Alexander Litvinenko will be examined in secret, a coroner ruled.

Alexander Litvinenko died in hospital in November 2006. Credit: Getty images

The former KGB agent's family believe the files may contain the key to his November 2006 assassination in London.

Mr Litvinenko, 43, was poisoned with polonium-210 while drinking tea at the Millennium Hotel in London's Grosvenor Square.

His widow Marina said she was disappointed by the decision and claimed the government planned to "suppress" evidence to protect relations with Russia.