At least five people were killed in violence Wednesday in Baghdad while car bomb blasts in the restive northern city of Kirkuk left at least 19 others dead, The New York Times reported.
Police said the target in Kirkuk may have been the local office of Masoud Barzani, president of Iraq's semi-autonomous northern Kurdish region. A leader from the Kurdistan Democratic Party in Kirkuk told the U.S. newspaper that the country was "witnessing a political crisis."
Political turmoil descended on Iraq following the 2011 departure of U.S. combat forces. Iraqi Prime Minister Nouri al-Maliki charged his vice president with operating a death squad and the Shiite leader has since faced mounting calls to step down ahead of April elections.
The country's finance minster escaped a recent assassination attempt and Tuesday parliamentarian Ifan al-Issawi was slain during protests in the former insurgent stronghold of Fallujah, the provincial capital of Anbar
Martin Kobler, U.N. special envoy to Iraq and head of the U.N. assistance mission there, said all sides to the crisis in Iraq need to honor the rule of law.
"I call again on all political forces to foil any attempt at instigating strife and to demonstrate utmost restraint," he said in a statement.
A protest movement has emerged in the western Sunni province of Anbar. Kobler said protesters there should remain peaceful, while security forces are reminded of their obligation to show restraint.