Russian special services have accused a Russian citizen of handing classified information to a Western country, a source familiar with the situation told Interfax.
"Citizen Kravtsov, accused of high treason, has been remanded into custody in Moscow. He was detained last year," the source said.
The suspect will be held in custody at least until the end of March, he said.
"He has been charged with passing classified information to the West. He faces up to 20 years in prison if found guilty," the source said, without naming the country with which the suspect had allegedly cooperated.
In an interview with Interfax, Yulia Skotnikova, spokesperson for Moscow's Lefortovo court confirmed the arrest of a man accused of high treason.
"On January 21, the court extended the custodial term of Gennady Nikolayevich Kravtsov, charged under Article 275 of the Russian Penal Code, until March 27, 2015," Skotnikova said, refusing to provide further details.
In a separate development, it was announced on February 4 that police in the Nizhny Novgorod region suspect a former researcher of the Russian Federal Nuclear Center, Vladimir Golubev, of disclosing state secrets.
"Golubev is an explosives specialist. His report was dedicated to his work. The publication of this report prompted the launch of a criminal inquiry against Golubev under Part 1 of Article 283 of the Russian Penal Code (divulgation of state secrets). However, the defense team believes that the scientist did not divulge any state secrets," Golubev's lawyer Yevgeny Gubin told Interfax.
On February 3, Svetlana Davydova, a mother of seven from the Smolensk region was accused of phoning the Ukrainian embassy regarding Russian troop movements, was released from custody with travel restrictions.
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