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.

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 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-storey nonresidential building and started a fire, Kyiv Mayor Vitali Klitschko said.