Russia launched a barrage of drones on Ukraine in an overnight attack on Friday, injuring four people and damaging a hospital and a grain warehouse in the southern Odesa region, officials said.

Ukraine's air defences shot down 59 of 102 Russian drones, the air force said. It said that 37 drones were "lost", referring to the use of electronic warfare to redirect them.

Russian drones caused damage in the northeastern Sumy region, the Odesa region in the south and the central Cherkasy region.

Oleh Kiper, the Odesa regional governor, said that four civilians, including a doctor, were injured in drone attacks targeting the city of Chornomorsk.

The strikes also partially disrupted electricity supplies in the city and damaged the city's hospital, an administrative building, a grain warehouse, a residential house, and several trucks, he said on the Telegram app.

Regional officials in the central Cherkasy region said that drone debris damaged an apartment building in the region.