More than 800 people have now been killed in violence so far this month, according to AFP figures based on security and medical sources -- an average of upwards of 27 a day.
And more than 3,000 people have been killed since the beginning of the year, a surge in unrest that the Iraqi government has failed to stem.
Today, 11 car bombs hit nine different areas of Baghdad, seven of them Shiite-majority, while another exploded in Mahmudiyah south of the capital.
A roadside bomb also killed five policemen, including a lieutenant colonel, north of Tikrit, while a magnetic "sticky bomb" killed a police captain in Anbar province.
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The attacks killed a total of at least 54 people and wounded at least 232.
The interior ministry warned of the consequences of the bloodshed.
Iraq is faced with "open war waged by the forces of bloody sectarianism aiming to plunge the country into chaos and reproduce civil war", the ministry said in a statement.
The interior ministry today called for the "full support and cooperation of citizens with the security forces".
Army and police forces meanwhile killed 10 militants west of Tikrit, police officers said.
They also destroyed the militants' camp, carried out controlled detonations of three car bombs and seized explosives belts, rocket-propelled grenade launchers, ammunition and explosives, they said.
One of the Baghdad bombs exploded near where day labourers wait for work in the overwhelmingly Shiite area of Sadr City, killing five people and wounding 17.
The explosion also badly damaged shops in the area, and the force of the blast smashed a white minibus, throwing it on its side.