At least 34 people died Sunday and dozens more were wounded in a series of car-bomb and roadside bomb attacks staged mainly in crowded marketplaces in Shi'ite zones of Iraq, police sources told Efe.

The majority of the dead and wounded resulted from attacks in the provinces of Basra, Karbala, Zi Qar, Babel and Wasit, which are largely Shi'ite and located south of Baghdad.

There was also one car-bomb attack in the Diyala region, northeast of the Iraqi capital, which killed six people and wounded eight.

The bloodiest attack took place in a marketplace in the city of Basra, where seven people died and 10 were wounded.

A similar attack in the holy city of Karbala killed five people and wounded 10.

Four people died and 30 were wounded when another vehicle exploded beside a market in the city of Kut, the capital of Wasit province.

The detonation of two car bombs, one after the other, killed three people and wounded 13 at the marketplace in the city of Al Nasiriyah, the capital of Zi Qar province.

In addition, two people died and 18 were wounded when a suicide bomber blew himself up at the entrance of the grand mosque in the city of Al Iskanderiya, in Babel province.

During the holy month of Ramadan on the Muslim calendar, terrorist attacks and sectarian violence in Iraq increase. Two days ago a number of attacks were staged in several of the provinces that have a Sunni majority.

Meanwhile, at least seven people were killed in several attacks in northern Iraq, most of them staged against security forces, police told Efe.

Three bodyguards for a high police official in the town of Hamam al Alil, 25 kilometers (about 15 miles) south of Mosul, the capital of central Nineveh province, died when a roadside bomb exploded as their convoy was passing. The official was not injured in the attack.

In the same town, a city councilman, Mohammed Abid Sultan, and his son were killed and two of their relatives wounded when three bombs blew up on their farm.

In addition, two soldiers died and three others were wounded in an attack on their patrol on a highway west of Tikrit, 170 kilometers (105 miles) north of Baghdad.

Meanwhile, the police chief for Nineveh province, Gen. Khaled al Hamdani, emerged unscathed from an assassination attempt in the town of Hadra, 80 kilometers (50 miles) southwest of Mosul. Three of his bodyguards were wounded in the attack, which was carried out with a roadside bomb as his convoy was passing. EFE