Drones struck one of Russia's largest oil refineries on the night of 27-28 March.

Source: Exilenova+ and Supernova+ Telegram channels; Yaroslavl Oblast Governor Mikhail Yevrayev

Details: The attack targeted the Yaroslavl oil refinery, known as Slavneft-YANOS (Yaroslavnefteorgsintez), located in the Russian city of Yaroslavl.

Videos and reports from local residents indicated that the facility had been hit. A large fire broke out at the refinery.

Slavneft-YANOS is one of the largest oil refining facilities in Russia, ranking fourth in the country in terms of oil processing capacity.

There has been no official confirmation of the attack so far.

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