The environmental group Greenpeace has released security camera footage of its premises in Murmansk, Russia, being raided by masked men overnight. The group said the men stole a mock cage, which was to be used as a prop during a protest. Twenty-eight Greenpeace activists, along with two journalists, have been jailed in Murmansk on piracy charges after being detained on board the "Arctic Sunrise" ship for protesting against oil drilling in the Russian Arctic.