Six car bombs exploded across Baghdad on Monday, killing at least 34 people and wounding scores, police said, after a spate of arrests targeting Sunni Arab fighters raised tensions in the Iraqi capital.
A blast at a popular market in eastern Baghdad's Shi'ite Sadr City slum killed at least 10 people and wounded 65.
Another car bomb blew up next to a group of labourers queuing for work, killing six people and wounding 16.
Two other blasts shook a market area of Husseiniya, on Baghdad's northern outskirts, killing four, and a street in eastern Baghdad, apparently targeting the convoy of an Interior Ministry official, killing one of his guards and a bystander.
Hours after the four early explosions, south Baghdad's Um al-Maalif neighbourhood was shaken by two separate blasts in the same market, killing 12 bystanders and wounding 25 others.
The latest spate of lethal attacks followed a week of arrests in Baghdad by Iraq's Shi'ite-led government of Sunni Arab fighters.