At least seven people were killed and four injured in fresh attacks across Iraq on Sunday, police told the German Press Agency dpa.
The deadliest attacks occurred in the troubled northern city of Mosul, where a bomb blast targeting a passing police patrol killed four civilians and injured two in the neighbourhood of al-Tahrir, police said.
Not long after, a second blast killed two policemen patrolling the west of the city, police said.
In the western city of Falluja, a bomb ripped through a police patrol, killing two policemen and wounding two, police said.
The city has in the past been the scene of some of the worst fighting between Sunni insurgents and US troops operating alongside Iraqi forces.
Tensions are high as the country gears up for parliamentary elections scheduled for March. Leading Sunni politicians have threatened to boycott the poll if candidates disqualified for their alleged connections to the former ruling Baath Party are not allowed to run.