The attacks came hours before the Iraqi presidency council fixed a new date for the country's crucial parliamentary elections on March 6.

The first attack occurred at about 10:25 a.m. (0725 GMT) when a car loaded with explosives went off at the park of the new seat of the Finance Ministry after a massive truck bombing on August 19 badly damaged its original building in Waziriya district.

Seconds later, another car bombing took place near an intersection close to the Interior Ministry in eastern Baghdad, while a third car bombing detonated in the park of a court near the Institution of Fine Arts in Baghdad's western district of Mansour.

A minute later, a fourth car bombing carried out by a minibus loaded with explosives went off at the intersection of the Nidaa mosque, near the Ministry of Labor and Social Affairs in the al-Qahira neighborhood in northeastern Baghdad.

The powerful blast destroyed dozens of civilian cars, which were crowded at the intersection.

A total of 112 people were killed and 425 wounded by the four coordinated bombings in Baghdad, the Interior Ministry said in its latest toll reports.

Earlier in the day, a suicide bomber drove his explosive-laden car into a police patrol in Baghdad's southern district of Doura, killing 15 people, including three policemen, and wounding 23 people.

The latest wave of deadly bombings is the third of such attacks since August 19 when suicide truck bombings struck the ministries of foreign affairs and finance, and the attacks on October 25 when insurgents hit the buildings of Baghdad Provincial Council and the Justice Ministry.