A data centre operated by Russian technology giant Yandex caught fire in the western Ryazan region after what the company said was a Ukrainian drone attack.
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The facility was taken offline, with Yandex warning that some services could be unavailable.
The footage shows flames and heavy smoke rising from the data centre in Sasovo. Ukraine also claimed to have struck a major oil refinery in Russia, but the claim could not be independently verified.
Recent targets have included energy systems, key industries, railways, post offices, shopping centers, telecom networks, gas stations and grain exports.
