Insurgents killed at least six people in a bomb attack on the home of a Shiite family in a mainly Sunni town south of the Iraqi capital early on Sunday, security officials and a medic said.
The blast also badly damaged a neighbouring home in Iskandiriyah, which lies within a confessionally mixed area known as the Triangle of Death because of frequent attacks since the 2003 US-led invasion.
Mohammed al-Shammari, a doctor at the main hospital in the nearby city of Hilla, said six people were killed and 11 others were wounded in the explosion.
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Among the injured were women and children, he said. The wounded included four who were badly hurt.
A police lieutenant in Iskandiriyah also put the toll at six dead, including two children, and six wounded.
The family whose house was bombed were members of the Shiite Al-Massudi tribe, he said.
Violence in Iraq has declined from its peak in 2006 and 2007 but attacks remain common. A total of 259 Iraqis were killed in attacks in July, the second-highest monthly figure for 2011.