Russia launched a barrage of drones and ballistic missiles across broad swaths of Ukraine early Friday, killing at least four people and injuring dozens of others, days after Kyiv launched a daring raid on Moscow’s fleet of strategic bombers.

Russia launched an intense missile and drone barrage at the Ukrainian capital Kyiv in the early hours of Friday, killing at least six people, Ukrainian officials said, as powerful explosions reverberated across the country.

Officials say Ukraine was under an ongoing Russian ballistic missile and drone attack early Friday that wounded at least three people.