Russia pounded Ukraine with missile and drone attacks overnight on Saturday and into Sunday morning, focusing on the major western city of Lviv.
Ukraine's neighbour Poland scrambled fighter jets in order to ensure the safety of Polish airspace, the Polish military confirmed. Allied NATO aircraft were also deployed.
Lviv's regional head, Maksym Kozytskyi, reported that two people were killed in strikes in the region, and two others were injured.
Additionally, Russia targeted Ukraine's power plants, including one that was struck in an overnight attack on Zaporizhzhia, where the mayor confirmed one fatality and noted that over 73,000 residents were left without electricity.
The Russian assaults came days after a U.S. official stated that the United States would support Ukraine in launching deep strikes inside Russian territory.
Polish and allied aircraft are operating in our airspace, while ground-based air defense and radar reconnaissance systems have been brought to the highest state of readiness, Poland's operational command announced.
As of 05:10 (GMT), all of Ukraine was under air raid alerts due to warnings of impending Russian missile and drone attacks.
Lviv's mayor, Andriy Sadovyi, mentioned that parts of the city, located about 70 km (43 miles) from the Polish border, were left without power as the city's air defense systems engaged against both drone and missile threats.
Consequently, public transportation was disrupted, and the mayor advised citizens to stay indoors, emphasizing the dangers outside.
In Zaporizhzhia, the overnight attack resulted in significant infrastructural damage and loss of life, with nine individuals requiring medical assistance, including a 16-year-old girl.
Russia has escalated its attacks on Ukraine's energy infrastructure, controlling a substantial portion of Ukrainian territory since its full-scale invasion commenced in 2022.
Meanwhile, Lithuania briefly closed its airspace after unidentified objects were observed, affecting operations at its largest airport.
