Greenpeace activists have for the second time in recent days carried out a raid targeting Russian oil production in the Arctic.
Fourteen activists of the international environmental group were reported to have intercepted a ship carrying oil workers to Russia's first Arctic oil production base.
Greenpeace said the activists chained themselves to the vessel on route to the Prirazlomnaya platform in the Pechora Sea.
On August 24, Greenpeace activists were reported to have climbed a floating oil rig in the Pechora Sea.
Russian state-owned giant Gazprom is attempting to pioneer production of the Arctic's suspected vast deposits of oil and natural gas.
Environmentalists warn that drilling in the Arctic could have disastrous consequences because of the Arctic's extreme conditions and a lack of technology to deal with a possible spill.
Based on reporting by AFP and AP