KYIV, Ukraine (AP) — Ukraine was under an ongoing Russian ballistic missile and drone attack early Friday that wounded at least three people, officials said.

Multiple explosions were heard in the capital, Kyiv, where falling debris sparked fires across several districts as air defense systems attempted to intercept incoming targets, said Tymur Tkachenko, head of the Kyiv City Administration.

Three people were wounded, local officials said. They urged residents to seek shelter.

“Our air defense crews are doing everything possible. But we must protect one another — stay safe,” Tkachenko wrote on Telegram.

Authorities reported damage in several districts, and rescue workers were responding at multiple locations.

In northern Chernihiv region, a Shahed drone exploded near an apartment building, shattering windows and doors, according to regional military administration chief Dmytro Bryzhynskyi. He added that explosions from ballistic missiles were also recorded on the outskirts of the city.