Several Iraqi cities saw separate attacks on Thursday in which at least seven people were killed and 21 injured, dpa reported
One police officer was killed and two bodyguards were injured by a bomb targeting a motorcade in the al-Qayara district of the northern city of Mosul.
Elsewhere, three bomb blasts that targetted Iraqi army personnel in the Baghdad area of Al-Adhamiya caused an unknown number of casualties, Aswat al-Iraq news agency reported.
"The explosions also left a military vehicle ablaze and caused severe damage to two police vehicles," military spokesman Mohamed Atta said.
The heavily Sunni-populated al-Adhamiya was the focus of intense US and Iraqi security operations aiming to purge the neighbourhood of al-Qaeda elements in recent years, including the building of a controversial wall surrounding the area.
Separately, a police officer and a member of the Awakening Council were killed Thursday in southern Baghdad when four gunmen opened fire on them before fleeing, Aswat al-Iraq reported.
Sahwa, or Awakening Councils, are a militia that support the government in its fight against al-Qaeda and are frequent targets of radical militant groups.
In Fallujah, an explosion killed one person, a day after an attack on a mosque in the city left one person dead and wounded eight others, including a preacher.
In another attack on the security forces, a suicide bomber drove a car loaded with explosives into an army barracks, killing three soldiers and injuring at least 11 outside the city of Tikrit.
The military base is located in the governorate of Salah ad Din, of which Tikrit, located some 140 kilometres north-west of Baghdad, is the administrative centre