Several explosions were heard in the Ukrainian capital, Kyiv, on Friday after authorities issued a warning of air raids across the country. Kyiv Mayor Vitali Klitschko urged residents to stay in shelters via the Telegram app. Klitschko reported that rocket fragments landed on a children's hospital in the city, but there were no injuries or casualties. Officials in Kyiv stated that "the air defenses are performing their tasks," and the air force mentioned that Russia launched sonic missiles at the Kyiv area. The Ukrainian public broadcasting service reported explosions in the Vinnytsia and Khmelnytsky regions.