Facebook and multiple media websites were partially inaccessible in Russia on Friday, as authorities crack down on critical voices and fighting rages in Ukraine.

AFP journalists in Moscow were not able to access Facebook, as well as the sites of media outlets Meduza, Deutsche Welle, RFE-RL and the BBC’s Russian-language service. The monitoring NGO GlobalCheck also said the sites were partially down.

On its Telegram account, independent outlet Meduza said that its site was no longer available to “some of its users” in Russia, but added that it had not received notification from the authorities about a block.