Up to 17 people were killed and some 57 others wounded in a series of bomb attacks in the Iraqi capital of Baghdad on Sunday, a police source said.

The deadliest attack occurred in the afternoon when two car bombs went off at a marketplace in Shaab district in the northeastern part of Baghdad, killing¹ a total of nine people and wounding 28 others, the source told Xinhua.

Another car bomb detonated at a marketplace in Jamila district in eastern the capital, killing four civilians³ and wounding 12 others, the source said.

A fourth car bomb exploded at a busy intersection⁵" target="_blank">intersection⁴ of al- Khillani in downtown Baghdad, leaving a civilian² dead and five others wounded, the source added.

Two more roadside bombs exploded separately at the busy commercial areas of Maidan and Souq al-Arabi in downtown Baghdad, killing three people and wounding 12 others, the source added.

No group has so far claimed responsibility for the deadly attacks, but the al-Qaida front in Iraq, in most cases, were allegedly responsible for such massive attacks in the country, raising fears that the terrorist group and other militia⁶ could return to widespread violence.

The attacks came as Iraqi security forces and Sunni tribesmen are fighting al-Qaida militants⁷ in the cities of Anbar province in western the country.