At least 54 people have been killed in car bombs in mostly Shia Muslim areas of Baghdad.
Police said there were 14 bombings across the city.
The deadliest of them was in Sadr City, where seven people, including two soldiers, were killed.
More than two years of civil war in neighbouring Syria have aggravated deep-rooted sectarian divisions in Iraq.
Yesterday, a suicide bomber blew himself up inside a mosque where a Shia funeral was being held, killing at least 40 people in Mussayab.
The United Nations mission in Iraq said about 800 Iraqis were killed in acts of violence in August.