More than 70 people have been killed and many others injured in a series of bomb attacks across Iraq.
Baghdad was worst hit, with several explosions at bus stations and markets in the mainly Shia Muslim districts.
Attacks also occurred in Samarra, north of the capital, and Basra and Hilla further south.
It is one of the worst days of violence in recent months as Iraq has seen a rise in attacks linked to growing political and sectarian tension.
The bloodshed has raised fears of a re-emergence of the levels of sectarian violence seen in 2006 and 2007.
Prime Minister Nouri al-Maliki vowed to make immediate changes to Iraq’s security strategy and told Iraqis that militants “will not be able to return us to the sectarian conflict”.
In a separate incident, 10 policemen kidnapped on Saturday in western Anbar province were found dead.