At least 51 people have been killed and six wounded in a Russian missile attack on a northeastern village, Ukrainian officials say.

Oleh Syniehubov, governor of the Kharkiv region, said the afternoon strike on Thursday hit a cafe and a store in the village of Hroza, about 30km (20 miles) west of the front-line town of Kupiansk, with many civilians present at the time of the attack.

He added that a six-year-old child was among the dead.