The jailed members of Pussy Riot may have some interesting company soon.

Green Peace pirates?

MURMANSK, Russia (AP) — Russian investigators say they will file piracy charges against Greenpeace activists who tried to climb onto an offshore drilling platform in the Arctic owned by the state-controlled gas company Gazprom.

The activists are on a Greenpeace ship, the Arctic Sunrise, which was seized last week by the Russian Coast Guard and towed Tuesday into a port near Murmansk.

It was unclear how many of the 30 activists from 18 countries face piracy charges, which carry a potential prison sentence of up to 15 years and a fine of 500,000 rubles (about $15,500). The Investigative Committee, Russia’s federal investigative agency, said Tuesday it would question all those who participated in the protest and detain the “more active” among them.