Five people were killed and ten others were injured in bomb and gunfire attacks in Baghdad and the provinces of Salahudin and Diyala in central Iraq on Wednesday, the police said.

A policeman was killed and three people were wounded when a bomb hidden in a garbage container outside a civil court in Tikrit, the capital of Salahudin province, detonated in the morning, a provincial police source told Xinhua on condition of anonymity.

In Diyala, three people were killed when gunmen opened fire at a house in the village of Rabia near al-Sa'diyah town, some 60 km north of the provincial capital city Baquba, a source from Diyala's operations command told Xinhua on condition of anonymity.

Also in Diyala, a joint U.S. and Iraqi force raided a village in the al-Nida area, east of Baquba, some 65 km northeast of Baghdad, and traded fire with gunmen, killing one of them and arresting two others, the source said.

One of the two captured was wounded by the clash, the source added.

In Baghdad, a total of six people were wounded in two roadside bombs exploded separately during the day in the east of the capital, an unnamed Interior Ministry source told Xinhua.

Violence is still common in Iraqi cities as part of recent deterioration in security which shaped a setback to the efforts of the Iraqi government to restore normalcy in the country more than five months after violence-torn Iraq held parliamentary elections on March 7.