Updated

Russian investigators say they have charged the entire crew of a Greenpeace ship with piracy for a protest at a Russian oil platform in the Arctic.

The Investigative Committee said in a statement that the charge, which can result in a 15-year prison term upon conviction, was filed Thursday against 16 members of the crew, including a prominent Russian freelance photographer.

The crew's other 14 members were similarly charged the day before.

The Russian Coast Guard seized the Greenpeace ship and all the people it was carrying following the Sept. 18 protest at the offshore platform owned by Russian state-controlled energy giant Gazprom. The activists are now in custody in the northern city of Murmansk.

Greenpeace denies any wrongdoing and describes the charges as absurd.