At least seven people were killed and nine others wounded in violent attacks in Iraq on Sunday, police said. A suicide car bomb attacked a police checkpoint in Tall Afar, 70 km west of the northern city of Mosul, killing two policemen and wounding three others and a civilian, a police source told Xinhua on condition of anonymity. Two Iraqi soldiers were killed as unidentified gunmen traveling in a car fired at an army checkpoint with automatic weapons in eastern Mosul, 400 km north of Baghdad, the source added. An army officer was killed and three soldiers were wounded when a roadside bomb targeted an army patrol in the area of Yusufiya, just 20 km south of Baghdad, the police source said. A civilian was killed and two others were injured when a roadside bomb exploded near the Diyala Bridge in southeastern Baghdad, while an engineer with the Iraqi Ministry of Agriculture was killed by unidentified gunmen in the Ghazaliya area in the western part of the capital city, the source said. Iraq is witnessing its worst eruption of violence in recent years. According to the UN Assistance Mission for Iraq, almost 7, 000 Iraqi civilians were killed and over 16,000 others injured from January to October this year.