In the deadliest attack on Monday, two car bombs exploded in Amara in south Iraq, killing seven people and wounding 34, a senior police officer and a medical official said.
A third car bomb exploded in Diwaniyah, also south of Baghdad, killing two people and wounding 20, police Brigadier General Abduljalil al-Assadi said.
A wave of violence began on Tuesday when security forces moved against Sunni anti-government protesters near the northern Sunni Arab town of Hawijah, sparking clashes that killed 53 people.
Subsequent unrest, much of it apparently linked to the Hawijah clashes, killed dozens more and brought the death toll to more than 230 by Monday.
The violence was the deadliest so far linked to demonstrations that broke out in Sunni areas of Shiite-majority Iraq more than four months ago.
The Sunni protesters have called for Shiite Prime Minister Nuri al-Maliki's resignation and railed against authorities for allegedly targeting their community with wrongful detentions and accusations of involvement in terrorism.
