At least 32 people were killed and 47 injured when a car bomb exploded at a market in the southern Iraqi city of Nasriya on Wednesday, a security official said.
The explosion took place in al-Bathaa market in the north of the city during a busy morning.
The injured were transferred to a nearby hospital. Many of the city's residents remained indoors following the attack.
Nasriya, the capital of the relatively peaceful province of Dhi Kar, is situated some 375 km south of Baghdad.
Multinational forces transferred security responsibilities for the predominantly Shia province to Iraqi forces in September 2006.