A total of 11 people were killed and 43 wounded in separate violent attacks across Iraq, including a suicide bombing in Anbar province, police and medical sources said on Tuesday.

In western Iraq, a suicide car bomber blew up his explosive- laden car into the entrance of Anbar's provincial council headquarters in the city of Ramadi, some 110 km west of Baghdad, leaving three soldiers killed and 15 people wounded, including six soldiers, a police source told Xinhua.

In a separate incident, an army force backed by allied tribal fighters fought al-Qaida militants in the center of Ramadi and killed two of them, while a suicide bomber blew up his explosive vest without causing casualties among the troops and the tribesmen, the source said.

Also in the province, Wisam al-Issawi, a medical source in Fallujah hospital told Xinhua that his hospital received four civilians wounded by mortar barrage on three neighborhoods in the besieged city of Fallujah, some 50 km west of Baghdad.

In Salahudin province, four policemen were killed and two others wounded when gunmen attacked their checkpoint at a village near the city of Baiji, some 30 km north of the provincial capital city of Tikrit, a provincial police source anonymously told Xinhua. Three more policemen were wounded in gunmen attack on their checkpoint near the city of Tuz-Khurmato, some 90 km east of Tikrit, the source said.

Salahudin province is a Sunni-dominated province and its capital Tikrit, some 170 km north of Baghdad, is the hometown of former president Saddam Hussein.

In Baghdad, a car bomb went off in the afternoon near a Shiite mosque in central area, killing at least a civilian and injuring nine others, a police source told Xinhua.

In Iraq's eastern province of Diyala, a roadside bomb struck a bus carrying school teachers south of the provincial capital city of Baquba, some 65 km northeast of Baghdad, leaving ten teachers wounded, a provincial police source said.

Iraq is witnessing its worst violence in recent years. According to the UN Assistance Mission for Iraq, a total of 8,868 Iraqis, including 7,818 civilians and civilian police personnel, were killed in 2013, the highest annual death toll in years.