MOSCOW, Oct. 6 (Xinhuanet) -- Russia insisted on its demand that former atomic energy minister Yevgeny Adamov be extradited to his homeland as US and Russian investigators met Thursday in Moscow to discuss his case.

    Moscow insists on the earliest possible extradition of Adamov to Russia, Foreign Ministry officials said after a meeting with representatives of the Russian Prosecutor General's Office and the US Department of Justice, according to the Itar-Tass news agency.

    "Russian officials presented to the US delegation, led by Pennsylvanian Attorney Mary Beth Buchanan, a well-substantiated position that Adamov must be extradited to Russia without delay," the officials said.

    During meetings in Moscow, US investigators and Russian prosecutors focused on investigation of Adamov's case and discussed the possible exchange of information on his case.

    Adamov was arrested on May 2 in Switzerland on US warrant. The United States accused him of embezzling up to 9 million US dollars of US aid to Russia, money that was intended for beefing up security at Russia's nuclear facilities. Both Russia and the United States requested his extradition.

    Swiss authorities decided Monday to extradite Adamov to the United States. A Swiss official said Thursday Adamov's lawyers had informed the authorities that they would appeal the ruling.

    The Foreign Ministry summoned a Swiss diplomat Wednesday, saying Switzerland's decision on Adamov's extradition would harm Russian-Swiss relations. Enditem