Russian missiles hit an apartment complex in the eastern Ukrainian city of Dnipro on Thursday, injuring nine, including two teenagers.
A building belonging to Ukraine’s security services (SBU) was also hit, President Volodymyr Zelensky said, calling it “Russian missile terror".
Mr Zelensky said he had convened emergency meetings following the missile strikes.
Regional governor Serhiy Lysak said the injured, including a 14-year-old and a 17-year-old, were receiving treatment at home.
The strike happened at around 20:30 local time (17:30 GMT).
Pictures posted on social media showed part of one building reduced to rubble and debris strewn across a large courtyard.
Dnipro Mayor Borys Filatov said it was the third time the SBU security service building had been targeted.
Both buildings were largely empty - the residential building because it had just been completed and units were being put up for sale.
Mr Lysak said on national television: “Part of the apartment building was destroyed. It was not even yet in use and there weren’t many people there.
“A few people were trapped but are now out. The security service building is partially destroyed."
Russia has often struck apartment buildings during the conflict, while denying it intentionally targets civilians.
It comes as the commander of Ukraine’s armed forces, Colonel General Oleksandr Syrskyi, said his troops were pushing forward in parts of eastern Ukraine occupied by Russia.
“The enemy fiercely clings to every centimeter, conducting intense artillery and mortar fire," he said in a statement.
Recent fighting has taken place at multiple places along the more than 600-mile front, where Ukraine deployed its recently acquired Western weapons to push out the Kremlin’s forces.
Western officials said on Thursday that Ukraine had launched a major push in the southeast.
Vladimir Putin acknowledged that fighting has intensified there, but insisted Kyiv’s push has failed.
Separately, the Russian Defence Ministry claimed it shot down a Ukrainian missile in the city of Taganrog, about 24 miles east of the border with Ukraine.
It reported 20 people were injured, identifying the epicentre as an art museum.
But Oleksiy Danilov, Ukraine’s secretary of the National Security and Defense Council, blamed Russian air defence systems for the explosion.
