Moscow/Kiev, Oct. 20 -- Ukraine and Russia on Sunday traded drone and missile attacks targeting each other's key energy supply facilities, according to official statements from bothsides.

Ukrainian drones struck a major gas processing plant in Russia's Orenburg region near the Kazakh border, causing a fire and forcing a temporary suspension of gas intake from Kazakhstan, Russian and Kazakh authorities said.

The Orenburg plant, operated by state-owned energy giant Gazprom, is one of the world's largest facilities of its kind, with an annual processing capacity of about 45 billion cubic meters.

Regional Governor Yevgeny Solntsev said the attack set fire to a workshop and damaged part of the plant. Kazakhstan's Energy Ministry confirmed tha...