Yandex confirmed on Telegram that its data centre in Vladimir had been damaged and that operations had been “completely suspended”, although it said it was working to restore connectivity.
The other strikes against Yandex facilities were on Thursday in Sasovo and Friday in Kaluga, south-west of Moscow, causing problems for some of its services, such as its AI chatbot and smart home devices.
The tech company – which also runs a food-ordering and taxi app used by tens of millions of people – said at the time that its data centres were critical for the normal operation of its services, and that it was “very difficult to predict” when they would be back online.
Meanwhile, Russian strikes on Ukraine have continued through the weekend.
The State Emergency Service of Ukraine said six people were injured in Russian attacks overnight on four districts in its south-eastern Dnipropetrovsk region.
On Saturday, at least 20 people including four children were killed in Russian attacks on Zaporizhzhia, local officials confirmed.
Russia has previously also struck Ukrainian data centres, causing internet outages and prompting some firms to move their servers abroad.