A missile strike on the Russian city of Belgorod near the Ukraine border on Thursday killed five people, including a child, and injured 18 others, a Russian official said, in what appeared to be the latest exchange of long-range missile and rocket fire between the two countries.

Hours earlier, Russia fired cruise and ballistic missiles at a broad area of Ukraine, hitting multiple regions after a midnight strike in Ukraine’s northeast killed four people in an apartment building, authorities said. Five of the 18 people injured in Belgorod were children, regional Gov. Vyacheslav Gladkov said on Telegram.