Russian Foreign Ministry on Monday confirmed reports that several Russian diplomats have been denied visa by the U.S. and could not attend a number of UN activities, according to TASS news agency.

"We confirm this," ministry spokeswoman Maria Zakharova said in response to a corresponding question.

The Russian delegates were to participate in the first session of the Open-Ended Working Group on Developments in the Field of Information and Telecommunications in the Context of International Security, which opened in New York on December 13, according to TASS.