Greenpeace says Russian authorities have charged 14 activists from several nations with piracy over a protest against Arctic oil drilling.
New Zealanders Jon Beauchamp and David John Haussmann are among the 30 activists arrested last month but it is not clear if they are among those charged so far.
The offence of piracy by an organised group is punishable in Russia by up to 15 years in prison.
Greenpeace says it expects more of the activists will face the same charge, the BBC reports.
The activists were arrested after a Greenpeace ship approached a drilling platform and two activists tried to scale the rig, operated by Russian state-owned company Gazprom.
Greenpeace has described the piracy charge as irrational, absurd and an outrage. The group says the charge is extreme and disproportionate.
