Russia has blocked access to Facebook in retaliation for the platform placing restrictions on Russia’s state-owned media.
It was later reported that it had also blocked Twitter.
The Russian state communications regulator said access had been restricted, according to the state-owned Ria news agency.
Facebook and its sister platform Instagram had earlier removed Russia Today (RT) and Sputnik from their output in the European Union this week and did the same with the UK on Friday, which drew an immediate response from the Russian communications regulator.
The Roskomnadzor watchdog said there had been 26 cases of discrimination against Russian media by Facebook since October 2020, with access restricted to state-backed news services like Russia Today and the RIA news agency.
Last week the regulator had announced a “partial” block of Facebook, claiming that the social network had violated the “rights and freedoms of Russian nationals.
It comes as Russia seeks to control the spread of information on the invasion of Ukraine and to move against independent news sources.