At least 70 people were killed and 110 wounded when two car bombs ripped through central Baghdad in coordinated attacks on Monday, a security official said.
The bombs exploded in central Baghdad's Haraj second-hand market shortly after midday (0900 GMT), sending twin columns of thick smoke billowing skywards, a security official said.
The nearly simultaneous blasts were followed by sporadic gunfire in the ethnically mixed district.
The Haraj market is often filled with traders selling used electronic goods, clothing and medicines.
Insurgents are concentrating their attacks in the capital where the US and Iraqi security forces are putting the final touches on a new plan to stabilise the city.