KYIV, Ukraine (AP) — Ukraine launched a barrage of drones across Russia overnight, the Defense Ministry in Moscow said Saturday, in attacks that appeared to target the country’s energy infrastructure.

Fifty drones were shot down by air defences over eight Russian regions, including 26 over the country’s western Belgorod region close to the Ukrainian border. Two people — a woman with a broken leg and the man caring for her — died during the barrage, after explosions sparked a blaze that set their home alight, Belgorod Gov. Vyacheslav Gladkov wrote on social media.

Drones were also reportedly destroyed over the Bryansk, Kursk, Tula, Smolensk, Ryazan, Kaluga regions across Russia’s west and south, as well as in the Moscow region.

Ukrainian officials normally decline comment about attacks on Russian soil. However, many of the drone strikes appeared to be directed toward Russia’s energy infrastructure.

The head of the Kaluga region, Vladislav Shapsha, said Saturday that a drone strike had sparked a blaze at an electrical substation, while Bryansk Gov. Alexander Bogomaz and Smolensk Gov. Vasily Anokhin also reported fires at fuel and energy complexes.

In recent months, Russian refineries and oil terminals have become priority targets of Ukrainian drone attacks, part of stepped-up assaults on Russian territory.

Ukrainian drone developers have been extending the weapons’ range for months, as Kyiv attempts to compensate for its battlefield disadvantage in weapons and troops. The unmanned aerial vehicles are also an affordable option while Ukraine waits for more U.S. military aid.

Meanwhile, Russia attacked Ukraine overnight with seven missiles, and air defences downed two missiles and three reconnaissance drones, the Ukrainian air force said Saturday.

Gov. Oleh Kiper, head of Ukraine’s Odesa region, said that ballistic missiles had damaged infrastructure overnight, but did not provide further details. Previous attacks on the Black Sea city on Friday damaged port infrastructure, including two food export terminals, Ukrainian President Volodymyr Zelenskyy said.

Russian shelling also killed a 50-year-old man in the city of Vovchansk, said Gov. Oleh Syniehubov, head of Ukraine’s Kharkiv region.

A 60-year-old woman was also injured after shelling struck a nine-story apartment block, he said.

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