"Yelchenko in a letter to UN secretary-general: we demand from the Russian Federation to cease hostilities immediately and to comply strictly with the ceasefire," the Mission tweeted.

The relevant letter dated January 30 has also been published, where Yelchenko reported about massive attacks by the Russian occupation forces using all available weapons, including MLRS "Grad" for the last two days. In addition, the letter says that the Russian weapons have killed 8 Ukrainian soldiers and left another 26 wounded.

Read alsoInvaders launch another assault on Ukraine positions near Avdiyivka, defy ceasefire proposal – ATO Staff"Civilians suffer because of the shelling of the residential areas: 2 civilians have been wounded. The cities of Yasinovata and Avdiyivka were fully cut off from electricity by shelling," reads the letter.

As UNIAN reported earlier, an attack on the Ukrainian-controlled town of Avdiyivka late on Monday left nearly 34,000 residents cut off the power grids along with a halt to the heat and water supply amid frosts forecast at 20 degrees Celsius below zero at night.