Russian air attacks on Ukrainian cities including Kyiv, Dnipro, and Kharkiv killed at least nine people and injured more than 60 early Tuesday, following warnings of a major assault by Moscow.

In Dnipro, missile and drone strikes killed five people and wounded 25, damaging homes, vehicles, and a children’s playground.

In Kyiv, at least four people died and 51 were injured, including children, as strikes caused building collapses and fires.

Officials said missile debris ignited cars and open areas, including near a kindergarten, while some people were believed trapped under rubble, Reuters has reported.

Thousands of Kyiv residents sought shelter in subway stations as air defense systems responded to the attacks.