Russia's communications regulator Roskomnadzor accused the network of "censorship" and 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.
The move came a day after Russia launched its attack on Ukraine.
It is unclear what the regulator restrictions mean, or to what extent Facebook's parent company Meta's other platforms - WhatsApp, Facebook Messenger and Instagram - are affected.
The 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.