Russian missiles struck the Ukrainian capital, Kyiv, in a predawn attack on March 24, the third “massive” attack on the city in the last four days.
Serhiy Popko, head of the Kyiv military administration, wrote on Telegram that there were no immediate reports of casualties. The air raid in the capital lasted about two hours.
Russian missiles also hit the western Lviv region, prompting NATO-member Poland to place its air defenses on heightened alert. Warsaw reported that one Russian cruise missile had violated the country’s airspace near the town of Oserdow.
Two Polish and two U.S. F-16 fighters were scrambled during the incident, during which the Russian missile reportedly penetrated about 2 kilometers into Polish territory.
WATCH: Police in Kyiv cordoned off a park where fragments of a Russian Kh-55 cruise missile intercepted by Ukrainian air defenses landed on March 24.
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Parts Of Downed Russian Missile Found In Kyiv Park
Poland’s Foreign Ministry said it would demand an explanation from Moscow for the incident and called on Russia to “stop terrorist air attacks on the inhabitants and territory of Ukraine.”
Defense Minister Wladyslaw Kosiniak-Kamysz said the missile was not shot down because there were no signs that it was headed for targets in Poland.
Kosiniak-Kamysz said Poland will strengthen its troop presence in the areas bordering Belarus and Russia, adding that this had already been a topic at a government national security meeting last week.
Lviv Mayor Andriy Sadoviy wrote on Telegram that the Russian missile attack had not targeted Lviv city but was aimed at “critical infrastructure” in the region.
Ukrainian military officials said at least two advanced Russian Kinzhal missiles were used in the Lviv region attack.
The Ukrainian military said that 18 of 29 missiles and 25 of 28 attacking drones had been intercepted. It also claimed to have hit two Russian military ships stationed at the annexed peninsula of Crimea in overnight strikes.
"The Ukrainian Armed Forces successfully struck the amphibious landing ships Yamal and Azov, a communications center, and a number of the Black Sea Fleet's infrastructure sites," the Ukrainian armed forces' strategic communications center said on March 24.
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Mikhail Razvozhayev, the Moscow-installed governor of the Russian-occupied Crimean port of Sevastopol, said one person was killed and four were wounded in a "massive" Ukrainian missile attack on the city on March 24.
Razvozhayev said 10 missiles were shot down during the attack which he called “the most massive in recent times.”
Residents reported explosions and smoke in the area of an oil depot in the village of Gvardiyske near Simferopol.
In Ukraine's northeastern Sumy region, a Russian air strike damaged energy infrastructure in a village near Bilopol, the mayor of Bilopol, Yuriy Zarko, said. Private houses, farm buildings, cars, and garages were also damaged, he added.
Russian forces dropped three high-explosive aerial bombs on the settlement around 1 p.m. local time, Zarko said, adding that the village had no electricity, water, or gas services as a result of the attack.
Volodymyr Kudrytskiy, the chairman of Ukrenerho's board, said the latest Russian attacks on energy facilities caused losses of at least 100 million euros, according to preliminary calculations.
Kudrytskiy said Ukrenerho was prepared for more attacks on the energy system and had set up a warehouse to hold the necessary equipment and materials and trained personnel, he said.
Oleksiy Chernyshov, the chairman of the board of Naftogaz of Ukraine, said earlier on Facebook that Naftogaz Group facilities were damaged in attacks on infrastructure in western Ukraine on March 24.
Chernyshov said Naftogaz was currently working on localizing and eliminating the impact and vowed that that attack would not affect the supply of natural gas to Ukrainian customers.
Ukraine's largest private energy provider, DTEK, lost 50 percent of its capacity, according to the head of the Yasno distribution firm, Serhiy Kovalenko.
Kovalenko told Ukrainian national television that Russia had attacked two parts of the energy system -- generation and distribution, hitting both thermal and hydropower plants.
The Energy Ministry said that Russia attempted to hit a critical energy infrastructure facility in the Lviv region on March 24, sparking a fire. There were no casualties, and the consequences are being assessed, the ministry said.