MOSCOW, May 20 (RAPSI) - Moscow’s Lefortovsky District Court on Wednesday ordered the detention until July 20 of Arstidas Tamosaitis, a Lithuanian citizen suspected of espionage, spokesperson for the court, Yulia Skotnikova, told RAPSI.

The case is marked as top secret and is being heard behind closed doors, according to Skotnikova.

An alleged spy was arrested in Moscow by the Federal Security Service (FSB) while getting a confidential document from an unidentified Russian national.

According to the FSB, the foreigner confessed that he is an officer of Lithuania's military intelligence.