LONDON – Lawyers for the widow of former Russian intelligence agent Alexander Litvinenko said they filed papers with the European Court of Human Rights Thursday, alleging Russia’s complicity in his poisoning. Louise Christian told The Associated Press the papers had been lodged with the Strasbourg-based court, which also accuse Russia of failing to investigate the crime. However, Christian declined to provide any further details of the allegations before a press conference today to mark the anniversary of the former security agent’s death. Litvinenko died in a London hospital on Nov. 23, 2006 after ingesting radioactive Isotope Polonium-210. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREPettersson scores another winner, Canucks beat KingsIf judges agree with the complaint against Moscow, the worst sanction Russia could face is expulsion from the 47-member Council of Europe – a pan-European human rights bloc to which it is a signatory. No member has been expelled after losing a human rights case in Strasbourg since the organization was founded in 1949. Anglo-Russian relations returned to a near Cold War low when Russia refused a British extradition request for Moscow-based millionaire Andrei Lugovoi on murder charges. British officials are continuing diplomatic negotiations with Russia over Lugovoi’s extradition and say they are determined to bring a conviction over a “singularly chilling crime committed against a British citizen that placed thousands of others in danger of radiation contamination.” Lugovoi denies responsibility and has continued his outspoken defense in Moscow. In an interview with The AP on Wednesday he repeated claims that Litvinenko worked for Britain’s foreign intelligence agency MI6 and tried to recruit him as an informant. Britain denies these claims. 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!