Russian strikes have hit Ukraine's north-eastern city of Kharkiv and Lviv in the country's west, the mayors of the two cities say.
The mayor of Kharkiv reported a "massive missile attack" on the city, while his counterpart in Lviv reported two strikes.
There were no immediate reports of casualties.
There are also reports of Russian drone strikes in the port city of Odesa earlier.
Kharkiv's regional military administration said Russia had "made about 10 strikes on the city".
Kharkiv is less than 40km (25 miles) from the border with Russia, while Lviv lies in the far west of Ukraine, just 70km from the Polish border.
A fire broke out in a high-rise building in Odesa late on Thursday after drones were reported to be headed for the area, officials said.
