BAGHDAD, Oct. 28 (Xinhua) -- Eleven people were wounded by roadside bombs explosions in Baghdad and the volatile province of Diyala province on Wednesday, police said.

    Six people, including three security forces, were injured in a roadside bomb explosion in Baghdad's northwestern neighborhood of Hurriya, an Interior police source said on condition of anonymity.

    The blast also caused damages to several nearby civilian cars and buildings, the source said.

    In Diyala, two men and a woman were wounded by a roadside bomb explosion near their car in the al- Mafraq area, west of the provincial capital city of Baquba, some 65 km northeast of Baghdad,a provincial police source said.

    Iraqi security forces sealed off the area and detained four suspects for interrogation, the source added.

    Also in the province, a father and his son were injured when a makeshift bomb struck their car in the village of al-Othmaniya, some 15 km southwest of Baquba, the source said.

    Another roadside bomb detonated near a U.S. patrol in the Eheimer area, 15 km east of Baquba, the police said without giving details about casualties, as the U.S. troops cordoned off the scene.

    The U.S. military did not confirm the incident yet.

    Meanwhile, Iraqi security forces carried out search operations in different parts of the province and detained nine suspects, he said.

    Diyala province stretches from the eastern edges of the capital to the Iranian border east of the country, has long been a stronghold for al-Qaida militants and other insurgent groups since the U.S.-led invasion of Iraq in 2003 despite repeated U.S. and Iraqi military operations against them.

    Sporadic attacks continue in Iraq as part of recent deterioration in security which shaped a setback to the efforts of the Iraqi government to restore normalcy in the country after more than three months of U.S. troops pullout of cities and towns.

Special Report: Tension escalates in Iraq