Kyiv has said for several weeks that its forces have advanced around the town of Dobropillia near the logistical hub of Pokrovsk, one of the key targets of Russian troops advancing slowly westward through Donetsk region.

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In his nightly video address, Zelenskiy said Kyiv's forces had made gains of more than 3 km (1.8 miles) further south in Zaporizhzhia region.

"At this time, Ukrainian units are continuing our counteroffensive actions near Dobropillia, but also in other sectors - particularly in Zaporizhzhia region near Orikhiv," he said.

"There, our forces have advanced - today more than 3 km."

The Ukrainian military's 24th Separate Assault Battalion posted on the Telegram messaging app that, together with another unit, it had brought under control Mali Shcherbaky, a village between Orikhiv and the Dnipro River.

A Russian Defence Ministry report made no reference to Ukrainian advances or whether Mali Shcherbaky had changed hands. But it said Moscow's troops had hit Ukrainian troops and equipment in Zaporizhzhia region, including in the village of Novoandriivka, near both Mali Shcherbaky and Orikhiv.