The Kremlin played down reports of a CIA spy inside Russia's presidential administration, but said an official identified by Russian media as the likely U.S. mole had worked there although he did not have access to President Vladimir Putin.

CNN reported on Monday that the United States had successfully extracted one of its highest-level covert sources inside Russia in 2017.

Two sources familiar with U.S. monitoring of Russian activities confirmed to Reuters that such a CIA informant did exist inside the Russian government and had been extracted and brought to the United States.