A Russian ballistic missile attack on Ukraine’s capital Kyiv early Friday killed at least one person and injured nine others, officials said. Moscow claimed it was in response to a Ukrainian strike on Russian soil using American-made weapons.

At least three loud blasts were heard in Kyiv shortly before sunrise. Ukraine’s air force said it intercepted five Iskander short-range ballistic missiles fired at the city. The attack knocked out heating to 630 residential buildings, 16 medical facilities, and 30 schools and kindergartens, the city administration said, and falling missile debris caused damage and sparked fires in three districts.