A large barrage of Ukrainian airstrikes killed at least four people in Russia, Moscow-area authorities said on Sunday.Kyiv’s drone strike bombardment follows Russia’s multiday missile and drone attack on Ukraine earlier this week, which came just days after a three-day ceasefire and prisoner exchange brokered by President Donald Trump.The Ukrainian drone strikes on the Moscow area killed four people, wounded 12 others, and launched debris onto Sheremetyevo International Airport in Moscow, according to the Associated Press. The drone strikes killed a woman in her house in Khimki, two men in the Pogorelki village, and one man in a truck in the Belgorod region, the outlet said.

Ukrainian President Volodymyr Zelensky said the Ukrainian attacks were in response to Russia’s attacks this week.

“Our responses to Russia’s prolongation of the war and its attacks on our cities and communities are entirely justified,” Zelensky wrote on X. “This time, Ukrainian long-range sanctions reached the Moscow region, and we are clearly telling the Russians: their state must end its war. Ukrainian drone and missile manufacturers continue their work.”

Zelensky said on Sunday morning that the Russians had launched 3,170 drones, 1,300 bombs, and over 70 missiles at Ukraine, killing 52 people and injuring 346 others.