Twenty-eight Greenpeace activists and two freelance journalists were detained last month over the protest at an Arctic oil rig.
They group, dubbed the Arctic 30, face piracy charges which are punishable by up to 15 years’ jail.
Security camera footage posted on the group’s website today showed six balaclava-wearing men climbing a fence and running into a guarded car park at Greenpeace’s Murmansk headquarters overnight on Thursday. They stole a mock cage that Greenpeace protesters had planned to stand in outside the Murmansk Regional Court yesterday in protest against the detentions. According to Greenpeace, the burglars also slashed the tyres of a car.