Russian forces launched a missile attack on Kyiv early Sunday, causing fires across parts of the Ukrainian capital and injuring at least three civilians, according to local authorities. 

Additional strikes in other regions of Ukraine killed at least two more people, the Associated Press reported.

The attacks came as Ukraine has stepped up its drone operations inside Russia, targeting key infrastructure and military-related sites in an effort to disrupt Moscow’s war effort. Ukrainian strikes have reportedly damaged energy facilities, contributed to fuel supply problems and added pressure on Russian President Vladimir Putin’s government as Russian forces continue their offensive.

In Russian-controlled eastern Ukraine, Moscow-installed officials accused Ukrainian forces of carrying out a drone strike on the city of Horlivka that killed four civilians. Ivan Prikhodko, the Russian-appointed mayor of Horlivka, said the city had come under attack beginning in the early morning hours Sunday.

Russia’s Defense Ministry said its air defenses intercepted 133 Ukrainian drones overnight across several areas, including Russian territory, the Black Sea and Crimea, the Ukrainian peninsula that Russia illegally annexed in 2014.

The latest wave of attacks reflects the continued expansion of the conflict beyond the front lines, with both Russia and Ukraine increasingly using long-range missiles and drones to strike military, energy and logistical targets.