Three Russian citizens who were among those arrested by Russian Coastguards during a Greenpeace protest have been granted bail after two months in detention.
Dr Yekaterina Zaspa, who served as medical crew aboard the icebreaker Arctic Sunrise, was released on bail of two million roubles in St Petersburg on Monday.
Freelance photographer Denis Sinyakov was also released, on the same bail, reports the BBC. Activist Andrey Allakhverdov was also granted bail.
An Australian activist, Colin Russell, was ordered to be kept in prison for a further three months while investigations continue.
The rest of the group, including New Zealanders David Haussmann and Jonathan Beauchamp, are due to face similar hearings this week.
Thirty people aboard the Arctic Sunrise were arrested on 19 September, a day after an attempt was made to board a Gazprom oil rig in the Arctic. They are charged with hooliganism, which carries a maximum prison term of seven years.