MOSCOW — At least four people were killed, including three in the Moscow region, after Ukraine launched its biggest overnight drone attack on the Russian capital in more ​than a year, local officials said on Sunday.

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A fourth person was killed in the ‌Belgorod region bordering northeastern Ukraine, local authorities said, while Russia’s defence ministry said by midday more than 1,000 Ukrainian drones had been downed over the country in the past 24 hours.

Ukraine’s President Volodymyr Zelenskyy had vowed retribution on ​Friday following Russia’s heaviest drone and missile attack on Kyiv over a two-day period since the war ​started more than four years ago.

Confirming the attack, Zelenskyy posted a video on ⁠X of a drone in flight, columns of black smoke and fire crews trying to extinguish ​the flames.

“Our responses to Russia’s prolongation of the war and its attacks on our cities and communities ​are entirely justified,” Zelenskyy said.

He added that Ukraine was able to strike targets more than 500 km (310 miles) from the border despite dense Russian air defences around Moscow.

“We are clearly telling the Russians: their state must end its ​war,” he said.

Russia’s foreign ministry accused Kyiv of targeting civilians.

“To the sound of Eurovision songs, the ​Kyiv regime, financed by the E.U., carried out yet another mass terrorist attack,” TASS news agency cited the ministry’s ‌spokeswoman ⁠Maria Zakharova as saying.

One Indian worker lost his life ⁠and three others were injured in a ⁠drone ​attack ⁠in the Moscow ⁠region on Sunday, ​the Indian ⁠embassy ‌in Russia said in an ‌X post.

Embassy ‌officials have visited the ⁠location, met the injured workers in the hospital, and are working with ‌local authorities to ​provide ‌necessary assistance ⁠to the ⁠workers, the ‌statement added.

Both sides in the conflict deny deliberately targeting civilians.

Long-range attacks

Ukraine has stepped up drone attacks on targets deep inside Russia in recent weeks, aiming to knock out oil refineries, depots and pipelines, as both sides seek to degrade each other’s infrastructure.

TASS cited Moscow Mayor Sergei Sobyanin as ​saying air defences had destroyed ​81 drones headed for ⁠Moscow since midnight, making it the largest attack on the capital in more than a year.

Sobyanin said 12 people were wounded, mostly near the ​entrance to Moscow’s oil refinery, while three houses were damaged. The “technology” of the ​refinery was ⁠not damaged, he added.

Moscow regional Governor Andrei Vorobyov said a woman was killed when a home was hit in Khimki, north of the capital, adding that rescuers were searching the debris for another person. Two ⁠men ​were killed in the village of Pogorelki in the Mytishchi ​district.

Several residential high-rises and infrastructure facilities were damaged, he said.

The country’s largest airport – Moscow’s Sheremetyevo – said drone debris had fallen on ​its territory without causing any damage.