Russia unleashed an overnight drone attack across Ukraine targeting the capital Kyiv and hitting infrastructure in the Black Sea port of Odesa, Ukrainian officials said on Sunday.

The State Emergency Service said one person was wounded and warehouses and cargo trucks were damaged in Odesa during the multi-wave attack, which kept much of the country under air-raid alert for several hours.

The Ukrainian military shot down 56 out of at least 87 drones launched by Russia over various regions of the country, the air force said. It added that another 25 were "lost" due to electronic jamming but did not elaborate.

Kyiv city military administrator Serhiy Popko said air defences destroyed all the drones that had been aimed at the capital. No injuries were reported.

Air raid alerts for Kyiv and the surrounding region were announced three times throughout the night, totalling more than five hours, Popko added.

Reuters could not independently verify the reports.

Russia has denied targeting civilians in its full-scale invasion of Ukraine, begun in February 2022, but regularly launches missiles, drones and bombs at population centres far behind the front line.