The charges on Thursday morning against Anne Mie Roer from Denmark and New Zealander Jonathan Beauchamp were followed by charges for 14 others and mean all of those detained on board the environmental watchdog's flagship Arctic Sunrise have now been slapped with piracy charges.

Russian forces detained 30 protesters after storming the vessel following an attempt by activists to scale the Prirazlomnaya platform at the Prirazlomnoye oilfield operated by Gazprom Neft Shelf.

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