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Russia's Kirishi oil refinery attacked

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Russia says over 80 drones downed

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Russia says the fire at Kirishi has been put out

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Ukraine says it carried out a 'successful strike'

(Adds Ukrainian confirmation in paragraph 5, recasts headline)

MOSCOW, Sept 14 (Reuters) -

Ukrainian drones attacked the Kirishi oil refinery in

Russia's northwest, one of the country's biggest, sparking a

fire when debris fell from a shot-down drone, Russian officials

said on Sunday.

As big powers talk about how to end the deadliest

conflict in Europe since World War Two, the drone war is heating

up with Russian drones downed in NATO-member Poland and attacks

by Ukraine against the oil refineries and pipelines of Russia,

the world's second biggest oil exporter.

Surgutneftegaz's Kirishinefteorgsintez

refinery, one of the top two refineries in Russia, was attacked

by Ukrainian drones, Russian officials said.

Alexander Drozdenko, the governor of the Leningrad

region, said that three drones were destroyed in the Kirishi

area and that a fire sparked by falling debris had been put out.

He said no one was injured.

Ukraine's drone command confirmed it attacked the

refinery and said it had "carried out a successful strike".

Reuters was unable to immediately verify the scale of

the damage, if any, to the refinery.

Kirishi refines about 17.7 million metric tons per year

(355,000 barrels per day) of Russian crude, or 6.4% of the

country's total.

Russia said that more than 80 Ukrainian drones were

destroyed overnight.

An oil company in Russia's Bashkortostan region will

maintain production levels despite a drone attack on Saturday,

regional governor Radiy Khabirov said.