Three people were killed and four injured when a policeman's home was blown up Monday in the Iraqi city of Fallujah, officials said, DPA reported.
The dead and injured were from the same family.
"Gunmen, believed to be from al-Qaeda, planted explosives around the policeman's house," a local security source said, describing the attack to the east of the city.
The policeman himself was among those killed, and the house was severely damaged. Police forces cordoned off the area to search for other explosive devices.
Several houses belonging to police and security personnel were bombed in recent months in areas around Fallujah, some 60 kilometres west of the capital Baghdad.
The country had witnessed a decrease in violent incidents since 2008, following massive military operations against insurgents, but in recent months attacks have mounted, leading to a rising death toll in Iraq.
US combat troops are to be withdrawn from the country at the end of this month, leaving behind a transitional force to help in training, equipping and advising Iraq's security forces.