A bomb hidden in an ambulance has exploded in a town just south of Baghdad killing several people at a wedding party, according to reports.
Several dead and wounded were taken to hospital in Baghdad, and survivors said more than a dozen people may have been killed.
Meanwhile, there were a number of fatalities and injuries following two earlier car bomb attacks nine days before the country's first election since the collapse of Saddam Hussein's regime.
In Baghdad, at least 14 people were killed and around 40 were wounded when an explosion took place outside a Shi'ite mosque in the west of the city.
Nine British soldiers and a number of Iraqis were injured in an explosion at the entrance to a British military base some 32km from Basra.
Britain's Ministry of Defence has said it could not confirm a claim made by a group linked to al-Qaeda that it carried out the attack in revenge for the alleged abuse of Iraqis by British soldiers.
