At least 16 people have been killed by two blasts in Baghdad's predominantly Shia neighbourhood of Sadr City, Iraqi security officials say.
Police said the bombs went off at the al-Hay market. They said the first exploded in a narrow alley.
As people gathered, a second, more powerful blast went off nearby, which caused most of the casualties.
The bombings come a day after the Iraqi capital suffered its worst attacks since August.
On October 12, 22 people were killed when two suicide bombers detonated explosive-laden vehicles minutes apart.
One of the bombers struck at al-Wiya police station in central Baghdad, and another drove his car into a police checkpoint in the busy residential Hurriya neighbourhood.
Six were killed in other bomb blasts on October 12 and at least nine people died in three blasts in Baghdad on October 10.
It comes as the last 41,000 American troops still in Iraq prepare to withdraw by the end of the year.
Official figures said 185 Iraqis were killed in violence in September.