Moscow: Russia on Monday declared a senior Romanian diplomat "persona non grata" asking him to leave the country within 48 hours for alleged spying.
The Federal Security Service (FSB) has identified the alleged spy as Gabriel Grecu, first secretary of the political department of the Romanian Embassy in Moscow.
"The Russian Foreign Ministry has protested via diplomatic channels to the Romanian side over Grecu`s activities, which were incongruous with his diplomatic status," the FSB said in a statement.
The Romanian diplomat was detained in Moscow while trying to obtain military secrets from a Russian national and espionage equipment was seized from him, fully substantiating his activities hostile to the Russian Federation, the FSB claimed.
No comments were immediately available from the Romanian Embassy in Moscow.
Former Soviet ally in Warsaw Pact, Romania is now a member of US-led NATO bloc and a member state of the European Union.