At least eight people are reported dead and dozens injured after three bomb blasts rocked the Iraqi capital.
The explosions struck the busy Shurja market in central Baghdad on the first day of the Muslim festival of Eid.
The number of people killed by violence in Iraq rose sharply last month with a string of roadside and suicide bombings in Baghdad.
The US is due to withdraw all its forces from Iraq by the end of the year.
Military leaders had expressed fears militants would become more active as American troops packed up and left.