The death toll includes civilians, members of the Ukrainian troops and also fighters in the anti-government forces.
"The trend is clear and alarming. There is a significant increase in the death toll in the east," Ivan Simonovic, UN Assistant Secretary General for Human Rights, told journalists, RT reported.
"The current number of killed is 2,593 - close to 3,000 if we include the 298 victims of the MH17 (Malaysian airliner) plane crash," he said.
The report, issued on Friday, August 29, 2014, and covering the period July 16 to August 17, condemns the killing and wounding of civilians in urban areas, which have lately turned into battlefields.
UN High Commissioner for Human Rights Navi Pillay has called on both sides of the conflict to lay down their arms.
“There is an urgent need to end the fighting and violence in the eastern regions, before more civilians are harmed or forced to flee, or face intolerable hardships trapped inside the conflict zones,” she said.
Pillay has urged all of the military units fighting in eastern Ukraine against “deliberately targeting civilians.”
“All those involved in the hostilities in the affected areas of the east must at all times comply with the principles of distinction, proportionality and precaution. This is particularly important in densely-populated areas,” she said.
The report says half the population of the cities of Lugansk and Donetsk, eastern Ukraine, have now left. However, evacuation has not been easy and not all of those wanting to flee were able to do so.
Some civilians lost their lives while trying to escape the violence, as the report says refugees were targeted and killed on their way out of conflict zones.