A wave of apparently co-ordinated bomb attacks in the Iraqi capital, Baghdad, have killed at least 57 people and injured more than 170.
Iraq's interior ministry says 13 locations have been attacked.
The bombings are the worst in months - and follow this week's withdrawal of the last US combat troops.
It is not immediately clear who was behind the attacks, although analysts say the level of co-ordination suggests a planning capability only available to al-Qaeda in Iraq.
The BBC reports that the bombings are the worst in Iraq in recent months.
They come amid fears of rising sectarian tensions as the unity government faces internal divisions.
Bombings remain common in Iraq despite an overall fall in violence.