Greenpeace have released new photos of its ship Arctic Sunrise apparently being boarded by Russian security forces during a protest against Arctic drilling.
Thirty activists were arrested last month while protesting against drilling by Gazprom, the Russian energy giant.
Russian authorities have charged two of the protesters with piracy, including Briton Kieron Bryan, 29, a freelance filmmaker.
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Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.
The first man to be convicted of murder on the basis of DNA evidence should be moved to an open prison, according to the Parole Board.