A WAVE of bombings and shootings across Iraq has killed 22 people as the country grapples with anti-government rallies and simmering political crises ahead of major Shi'ite commemoration rituals.
No group immediately claimed responsibility for Monday's attacks in more than a dozen towns and cities that wounded 83 people, but Sunni militants such as al-Qaeda's front group in Iraq regularly target officials and security forces in a bid to destabilise the government, and also often attack Shi'ite pilgrims.
The violence comes after anti-government protesters blocked a key highway to Syria and Jordan, amid political tensions between Shi'ite Prime Minister Nouri al-Maliki and a secular Sunni-backed party in his fragile national unity government.
Much of Monday's violence targeted Shi'ite pilgrims, ahead of Arbaeen commemoration ceremonies due this week.
In the deadliest attack, seven people - three women, two children and two men - were killed when three houses were blown up in the town of Mussayib, south of Baghdad, police and a medic said. Four others were wounded.
The victims were apparently targeted because they were Shi'ites, the officials said.
Shi'ite pilgrims embarking on the traditional walk to the holy shrine city of Karbala for Arbaeen commemorations were hit by three mortar strikes south of Baghdad that killed one worshipper and wounded nine others.
A series of attacks in restive Diyala province, north of Baghdad, wounded 19 people, including 10 Shi'ite pilgrims who were walking to Karbala.
Attacks in Baghdad and north of the city, meanwhile, killed 12 people.
In the capital's central commercial district of Karrada, a car bomb detonated by a suicide attacker left at least four dead and 20 others wounded, security and medical officials said.
A series of bombings in the ethnically mixed northern city of Kirkuk and nearby towns killed five policemen and wounded 11 other people, local officials said.
And in the main northern city of Mosul, two policemen guarding an election centre were gunned down, while one policeman was killed and another wounded by a roadside bomb in Tuz Khurmatu.
South of Baghdad, a car bombing outside government offices killed two people as the provincial governor was arriving.