U.K. newspaper the Guardian said its Moscow correspondent has been denied entry into Russia, in a move the paper said was a sign of pressure on the foreign media reminiscent of Cold War-era expulsions.

Russian government agencies declined to comment Tuesday on the expulsion of Luke Harding. But local news agencies cited an unnamed law-enforcement source as saying Mr. Harding had been put on the list of people whose presence in Russia had been deemed "undesirable." No reason was given.

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