MOSCOW: A court in the northern Russian city of Murmansk on Sunday sent all eight remaining Greenpeace activists to jail for two months, showing no leniency toward any of the 30 people detained for a protest at a drilling platform in Arctic waters.

Twenty activists and two journalists were ordered jailed for two months during a marathon court session on Thursday that stretched late into night, but the court had ruled to hold the remaining eight only until new hearings could be held on Sunday. No charges have been brought against any of the activists, who are citizens of 18 countries, including Russia.

Russian prosecutors are considering whether to charge them with piracy, among other offenses, and the activists are being held pending the investigation. The Russian Coast Guard disrupted an attempt on Sept. 18 by two of the activists to scale a platform owned by Russian state-controlled energy giant Gazprom to call attention to the environmental risks of drilling in Arctic waters.