Russian attacks have destroyed an oil refinery in the central Poltava region and struck “critical infrastructure”, most likely oil facilities, near the key port city of Odesa, local officials said.

Kremenchuk, 250km (150 miles) southeast of Kyiv along the Dnipro River, had Ukraine’s only fully functioning oil refinery.

Dmytro Lunin, governor of the Poltava region, said on television that the refinery had been destroyed in a rocket attack on Saturday.