KYIV, May 28 - Ukraine’s capital was subjected to the largest drone attack since the start of Russia’s war, local officials said, as Kyiv prepared to mark the anniversary of its founding on Sunday. At least one person was killed, but officials said scores of drones were shot down, demonstrating Ukraine’s air defense capability.

Russia launched the “most massive attack” on the city overnight Saturday with Iranian-made Shahed drones, said Serhii Popko, a senior Kyiv military official, The Associated Press reported. The attack lasted more than five hours, with air defense reportedly shooting down more than 40 drones.

A 41-year-old man was killed and a 35-year-old woman was hospitalized when debris fell on a seven-story nonresidential building and started a fire, Kyiv Mayor Vitali Klitschko said.

Ukraine said that Saturday night was also record-breaking in terms of Shahed drone attacks across the country. Of the 59 drones launched, 58 were shot down by air defense systems, according to the military’s General Staff.

Russia has repeatedly launched waves of drone attacks against Ukraine, but most are shot down. Ukraine has also claimed this month to have downed some of Russia’s hypersonic Kinzhal missiles, which Russian President Vladimir Putin has touted as providing a key competitive advantage.

In the northeastern Kharkiv province, regional Gov. Oleh Syniehubov said a 61-year-old woman and a 60-year-old man were killed in two separate shelling attacks.

Kyiv Day marks the anniversary of the city’s official founding. The day is usually celebrated with live concerts, street fairs, exhibitions and fireworks. Scaled-back festivities were planned for this year, the city’s 1,541st anniversary.

The timing of the drone attacks was likely not coincidental, Ukrainian officials said.

“The history of Ukraine is a long-standing irritant for the insecure Russians,” Ukraine’s chief presidential aide, Andriy Yermak, said on Telegram.

“Today, the enemy decided to ‘congratulate’ the people of Kyiv on Kyiv Day with the help of their deadly UAVs (unmanned aerial vehicles),” Popko also wrote on the messaging app.

Local officials in Russia’s southern Krasnodar region said that air defense systems destroyed several drones as they approached the Ilsky oil refinery. The Russia-backed governor of Luhansk province in Ukraine’s far east, Leonid Pasechnik, said two people were killed Sunday in Ukrainian shelling of the town of Almaznaya.

Russia’s southern Belgorod region, bordering Ukraine, also came under attack from Ukrainian forces on Saturday, local officials said. Regional Gov. Vyacheslav Gladkov reported Sunday that a 15-year-old girl and a 17-year-old boy were wounded in the shelling.

Drone attacks against Russian border regions have been a regular occurrence since the start of the invasion in February 2022, with attacks increasing last month. Earlier this month, an oil refinery in Krasnodar was attacked by drones on two straight days. (ap/ez)