Some 13 people were killed Tuesday when a car bomb exploded at a fruit and vegetable market in Baghdad, police said.
Another 20 people were injured in the attack in the Iraqi capital's northern al-Husseiniya district, according to police.
The bombing came as the Iraqi parliament was due to discuss security measures in Baghdad in the wake of last week's car bomb attack that killed some 292 people in the city's Karada district.
On Friday Prime Minister Haider al-Abadi accepted the resignation of interior minister Mohammed al-Ghabban and sacked the city's head of security operations, Abdul Amir al-Shammari.
The Karada bombing set off a blaze that completely destroyed a mall and other shops and apartments during the busy shopping period before the Islamic feast of Eid al-Fitr.
The attack, the worst of numerous bombings in the Iraqi capital since the US-led invasion of the country in 2003, was claimed by the Islamic State extremist organization.
On Monday, the US said it would send an additional 560 troops to northern Iraq ahead of a planned operation to recapture Mosul, Iraq's second-largest city and Islamic State's main stronghold in the country.