Russia hit energy infrastructure in northern Ukraine in an overnight missile and drone attack and caused a huge fire in the west of the country, resulting in an increase in chlorine levels in the air, Ukrainian officials said on Tuesday.
Ukrainian forces shot down three ballistic missiles and 25 of the 26 drones launched in the attack on nine regions across the country, Ukraine's air force commander said.
Regional officials in the northeastern Sumy region bordering Russia said an energy facility was hit, causing blackouts for 72 settlements and more than 18,500 consumers.
Energy workers rushed to repair the damage, the regional administration said on the Telegram messaging app.
Ukrainian energy facilities have come under nearly daily bombardment over the past six months as the war grinds on following Russia's full-scale invasion in February 2022.