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.
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.