Russia and Ukraine exchanged accusations Sunday of violating a U.S.-brokered ceasefire that took effect Saturday, with both sides reporting casualties and continued military activity.

Russia's Ministry of Defense accused Ukrainian forces of committing more than 1,000 ceasefire violations, according to state media reports. The ministry said Ukrainian forces attacked civilian targets in several Russian regions and struck Russian military positions on the front line. Russia's military said it "responded in kind" to the alleged violations. Two people were injured by Ukrainian shelling in the Russian-occupied part of Ukraine's Kherson region, according to the area's Moscow-installed leader Vladimir Saldo.

Ukrainian officials reported multiple Russian attacks but stopped short of explicitly accusing Moscow of violating the truce. Ivan Fedorov, head of Ukraine's Zaporizhzhia region, said one person was killed and three injured by artillery and drone attacks in the past 24 hours. In Kherson, seven people were wounded over the same period, according to regional head Oleksandr Prokudin. Five additional people were injured when a Russian drone damaged a nine-story apartment building in Kharkiv late Saturday.

U.S. President Donald Trump announced Friday that Russia and Ukraine had agreed to his request for a ceasefire running Saturday through Monday to mark Victory Day, Russia's celebration of the defeat of Nazi Germany. Trump said the agreement would include a prisoner exchange and could mark the "beginning of the end" of the war.

Ukrainian President Volodymyr Zelenskyy had previously suggested Russian authorities "fear drones may buzz over Red Square" during Moscow's May 9 parade. Following Trump's announcement, Zelenskyy mockingly declared Red Square temporarily off-limits for Ukrainian strikes to allow the parade to proceed. The Kremlin dismissed the comment as a "silly joke."

Russian presidential aide Yuri Ushakov said Sunday he expects U.S. envoy Steve Witkoff and Trump's son-in-law Jared Kushner to visit Moscow "soon enough" for continued negotiations. However, Ushakov emphasized that Moscow maintains its demand for Ukrainian troops to withdraw from the eastern Donbas region, stating that without this step, negotiations would remain at an impasse.