Russia, which invaded Ukraine in February 2022, stepped up its attacks on port infrastructure on the Danube River and the Black Sea after it withdrew in July from a U.N.-brokered deal that guaranteed safe shipments of Ukrainian grain.

"The invaders hit the port infrastructure of Odesa. People were not injured," Odesa Governor Oleh Kiper said on Telegram messenger.

Russia used ?-31 missiles, the southern military command said on Telegram.

It also reported strikes on the Belhorod-Dniester district in the region, with missiles hitting open surface and administrative buildings.

The export deal brokered by the United Nations and Turkey collapsed as Russia declined to recognise it, saying its demand that sanctions be lifted on its grain and fertiliser exports had not been met.

Ukraine has since opened what it says is a humanitarian corridor in a bid to break Russia's de facto blockade and accused Moscow of targeting this route as well.

(Reporting by Yuliia Dysa, Editing by William Maclean and Grant McCool)