A Ukrainian strike on the Russian border city of Belgorod caused the partial collapse of a building that injured at least nine people, Russian emergency services said.
"Nine people have been hurt in the collapse of a residential building in Belgorod," the Ria Novosti news agency quoted rescue services as saying.
The emergency situations ministry said 12 people, including two children, had been rescued from the rubble.
The defence ministry said meanwhile the Ukrainian army had attacked "residential districts in the city of Belgorod".
The ministry said one of a series of Ukrainian Tochka-U missiles intercepted by Russian anti-aircraft defences had "damaged" the building.
The emergency situations ministry warned the number of victims could rise as part of the building roof caved in just as rescuers were searching for survivors.
Belgorod governor Viacheslav Gladkov had posted to Telegram a video showing a collapsed building with a huge hole in it.
"Following direct shell fire on a residential building ... the entire entrance, from the tenth to the ground floor, collapsed," Gladkov said, condemning "massive bombings" by the Ukrainian army.
Belgorod is regularly targeted by Ukrainian drone and missile attacks. Kyiv says it is doing so to counter daily bombardments by Russian forces on Ukrainian cities since the February 2022 military offensive started.
On December 30, 25 people were killed and about 100 injured in one attack.