MOSCOW, April 5 (RAPSI) – A prosecutor will seek punishment for Frode Berg, a citizen of Norway charged with espionage related to Russian navy, during the oral argument hearing on April 9, the court’s press service told RAPSI Friday.

The trial of Berg is held behind closed doors.

According to prosecutor Milana Digayeva, Berg has collected information on Russian nuclear-powered submarines for the Norwegian intelligence service.

Currently, the defendant is in jail. On April 2, the court extended his detention until September 22.

According to information in the public domain, Berg was arrested when receiving secret documents containing information on Russian navy in December 2017. These papers were allegedly given to him by Russian national Alexey Zhitnyuk, who was detained in December 2017 on suspicion of treason.

In September, Russian investigators authorized a supplementary expert examination in the case against the Norwegian citizen.

Berg could face up to 20 years in Russian prison if convicted. However, he pleaded not guilty.