On Sunday, Russian media were warned to desist from reporting an interview done with Ukrainian President Volodymyr Zelensky.
It said it had started a probe into the outlets which had interviewed the Ukrainian leader.
In a short statement distributed by the watchdog on social media and posted on its website, it said a host of Russian outlets had done an interview with Zelensky, Reuters reports.
“Roskomnadzor warns the Russian media about the necessity of refraining from publishing this interview,” it said. It did not give a reason for its warning.
Russian prosecutors said a legal opinion would be made on the statements made in the interview and on the legality of publishing the interview.
Zelensky has spoken to several Russian publications since his country was invaded by Russia on February 24.