The statement came a day after the release of an unclassified Pentagon report that cited two captured Iraqi documents that say the Russians collected information from sources "inside the American Central Command" and that battlefield intelligence was provided to then-Iraqi leader Saddam Hussein through the Russian ambassador in Baghdad.

The report also said the Russian government had sources inside the American military command as it planned and executed the invasion of Iraq in 2003.

"Similar, baseless accusations concerning Russia's intelligence have been made more than once," Foreign Intelligence Service spokesman Boris Labusov said, according to a duty officer in his department. "We don't consider it necessary to comment on such fabrications."

The unclassified report does not assess the value or accuracy of the information Saddam got or offer details on Russia's information pipeline. Maria Zakharova, spokeswoman for Russia's U.N. mission in New York, also said Friday the allegations were false."To my mind, from my understanding it's absolutely nonsense and it's ridiculous," she said, adding that the U.S. government had not shown Russia the evidence cited in the report. "Somebody wants to say something, and did -- and there is no evidence to prove it."

Pavel Felgenhauer, a respected independent Moscow-based military analyst, said Friday that the report was within the realm of possibility.

"It's quite plausible," he told The Associated Press.