Pro-Russian separatists are continuing an onslaught on Avdiivka, in the eastern Ukrainian region of Donbass, after launching the attack on Sunday, Polish media reported.

Ukraine’s foreign ministry has called the onslaught a Russian "war crime."

Missiles allegedly fired from civilian districts of Donetsk and Yasynuvata, in eastern Ukraine, have fallen on the town, cutting its power, water and heating and injuring at least one citizen, according to Polish Radio.

Local authorities have not ruled out evacuating civilians, while Kiev has demanded a ceasefire.

The OSCE Special Monitoring Mission (SMM) to Ukraine has confirmed that tanks, artillery and missiles are being used around Avdiivka.

Meanwhile, SMM observers reportedly heard more than 400 explosions and many series of machine gun fire over four hours on Sunday night.

Ukrainian President Petro Poroshenko has cut short an official visit to Germany. At least eight Ukrainian soldiers have died and a further 30 have been wounded in Avdiivka since Sunday. (vb/pk)

Source: IAR, PAP