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A worker walks past pump jacks on an oil field owned by Bashneft company near the village of Nikolo-Berezovka, northwest from Ufa, Bashkortostan, January 28, 2015. Reuters
Russia hit the Kremenchuk oil refinery in the central Poltava region of Ukraine in an overnight drone attack causing a fire, governor Dmytro Lunin said on Wednesday.
Refinery operations have been temporarily stopped, he said on the Telegram messaging app, adding that there was no information about casualties. (Reporting by Anna Pruchnicka; Editing by Jacqueline Wong)