Several explosions rocked the Ukrainian capital Kyiv and the cities of Lviv, Ternopil, and Dnipro on Monday after Russia accused Ukraine of orchestrating a powerful blast that damaged a key bridge linking Russia and Crimea.
Ukrainian public broadcaster Suspilne quoted emergency services as saying there were dead and wounded in Kyiv but gave no further details of casualties.
"The air attack continues, I ask everyone to remain calm and stay in shelters," the city mayor Andriy Sadovy said.