The UN also noted that at least 3,930 civilians have so far lost their lives and 4,532 injured in the war.
The Russian and Ukrainian delegations held a total of four face-to-face negotiations, with three of them in Belarus and one in Turkey, to ensure a cease-fire.
In Belarus, both sides could only agree on humanitarian corridors for the evacuation of civilians from conflict zones.
As a result of the mediation attempts by Turkish President Recep Tayyip Erdoğan, the Ukrainian side delivered the principles of a draft agreement to the Russian side during negotiations held in Istanbul on March 29.