An adviser to the director of Russia's state space corporation has been arrested over accusations of treason.
Ivan Safronov, an adviser to Roscosmos head Dmitry Rogozin, was detained in Moscow by agents of the Federal Security Service (FSB), the main KGB successor agency.
The FSB said Safronov is accused of relaying sensitive data to a spy agency of an unspecified Nato member. It said the information he provided referred to "military-technical cooperation, defence and security of the Russian Federation".
Roscosmos said the charges did not relate to Safronov's work for the corporation, which he joined in May.