At least six people were killed and several others injured in overnight Russian and Ukrainian attacks, officials said Sunday, as both sides intensified long-range strikes targeting energy and transport infrastructure.
In Russia, a Ukrainian drone strike killed one person and wounded three others, including a child, at the Syzran oil refinery in the Samara region, Gov. Vyacheslav Fedorishchev said. Residential homes, apartment buildings and an unspecified industrial facility were also damaged.
The Syzran refinery, owned by Russian oil giant Rosneft and located about 800 kilometers (500 miles) east of the Ukrainian border, has been repeatedly targeted by Kyiv as part of its campaign against Russia's energy infrastructure.
In a separate attack, authorities in Russia's Belgorod region said a 13-year-old boy died in a hospital after being critically wounded in a Ukrainian drone strike on the town of Grayvoron.
Gov. Yuri Slyusar of Russia's Rostov region also said a drone attack damaged an empty tanker in the Azov-Black Sea maritime canal. He said there was no risk of an oil spill.
