Russia has blocked Twitter and threatened to do the same with Facebook after a clash over “censorship”.
Russia’s communications regulator Roskomnadzor accused Facebook of violating “the rights and freedoms of Russian citizens”.
Facebook said it had refused to stop fact-checking and labelling content from state-owned news organisations.
Internet connectivity watchers at NetBlocks say there is a total or near-total restriction on Twitter in Russia.
The actions follow Russia’s attack on Ukraine with many videos and images of the invasion going viral on social media.
NetBlocks says Facebook and Instagram appear to be running normally but Twitter services started being disrupted on Saturday morning.
User reports also corroborate this.
Circumvention for those in Russia is currently possible using VPN services, which can work around government-imposed restrictions.
It is unclear what the Facebook restrictions could mean if implemented or if other Meta-owned platforms will be hit.
The Russian regulator had demanded Facebook lift the restrictions it placed on Thursday on state news agency RIA, state TV channel Zvezda, and pro-Kremlin news sites Lenta.Ru and Gazeta.Ru.
It said that Meta had “ignored” these requests.