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Russian forces continued their assault on eastern and southern Ukraine Wednesday, as officials urged remaining residents in the port city of Mariupol to evacuate.

Kharkiv and Kramatorsk came under further attack, and Russia also said it had struck areas around Zaporizhzhia and Dnipro.

Explosions were heard in the southern city of Mykolaiv and a hospital was reported to have been shelled in the town of Bashtanka.

ZELENSKYY LAMENTS REPEATEDLY ASKING ALLIES FOR WEAPONS THEY HAVE IN STORAGE, SAYS WAR WOULD BE OVER

Russian Defense Ministry spokesman Maj. Gen. Igor Konashenkov said Moscow’s forces bombarded numerous Ukrainian military sites, though those claims could not be independently verified.

A senior U.S. defense official, speaking on condition of anonymity, told The Associated Press that the Russians had added two more combat units, known as battalion tactical groups, in Ukraine. That brought the total number of units in the country to 78, all of them in the south and the east, up from 65 last week, the official said.

A European official, likewise speaking on condition of anonymity to discuss military assessments, said Russia also has 10,000 to 20,000 foreign fighters in the Donbas region.