At least 18 Iraqis were killed and 19 more were wounded.
Security forces killed nine al-Qaeda suspects and arrested 10 more in Salah ad Din province.
In Baghdad, gunmen killed an employee with the Electricity Ministry. One person was killed and three others were wounded in a blast south of the city. A bomb wounded a brigadier.
A roadside bomb killed a truck driver in Kirkuk.
Gunmen killed a policeman in Amiriyat al-Fallujah.
A roadside bomb wounded three people in Abu Ghraib.