At least seven people have been killed and 22 others wounded in a rocket attack on the regional administration building in the southern port city of Mykolaiv in Ukraine, local authorities have said.

Russian forces struck the nine-storey building at 8:45am (05:45 GMT) on Tuesday, destroying its central section from the first to the ninth floor, the State Emergency Service (SES) said on its Telegram channel.

Eighteen of those wounded were pulled from the rubble, it said, adding that search and rescue operations were continuing.