The U.N. Assistance Mission for Iraq and the U.N. Office of the High Commissioner for Human Rights issued their review of the human rights situation in Iraq from July 1 to Dec. 31. The report said at least 3,200 civilians were killed and another 10,000 were injured in violent attacks last year.
The report said the human rights situation in Iraq is in decline because of mounting violence.
"We have consistently urged Iraqi leaders to engage in dialogue and develop policies that address the root causes of the problem," U.N. special envoy to Iraq Martin Kobler said in a statement Thursday. "Too many innocent lives have been lost."
Last month was the deadliest in Iraq in five years. More than 1,000 civilians and security officials died in terrorist attacks or other acts of violence in May.
The United Nations said it welcomed Iraqi efforts to implement a national action plan on human rights, though Kobler said leaders so far fell short of their expectations.
"Iraqi citizens look to their leaders for protection," he said. "The human rights of all Iraqis should be of paramount concern for all members of the Iraqi government."