The environmentalists, detained in the Pechora Sea, have refused to give statements to investigators in Murmansk due to serious procedural violations, the Russian office of the Greenpeace environmental organization said.
"Many violations have occurred and lawyers and consuls do not have regular access to those they represent. There have not been regular opportunities to study case materials," head of the temporary Greenpeace group in Murmansk, Dmitry Artamonov, told Interfax on Thursday.
Murmansk's Leninsky Court is expected to rule on Thursday on the pre-trial restrictions faced by 30 environmentalists detained for attempting to hold a protest rally on the Prirazlomnaya platform in the Pechora Sea.
The environmentalists have refused to give statements, referring to Article 51 of the Russian Constitution, Artamonov said.
"Everything will then depend on how procedural actions are conducted. The line is absolutely clear - all people should be released immediately, there are no grounds for their detention," Artamonov said.
Artamonov said he was not aware of how the Russian authorities resolved the problems caused by the fact that the foreign environmentalists did not have Russian visas. "As far as I understand, this issue currently concerns those, who are investigating the case. We do not know how this issue was resolved," he said.
Russian Investigative committee spokesman Vladimir Markin told Interfax earlier on Thursday that investigators would ask the court to place all 30 activists of Greenpeace under arrest.
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