Baghdad, Iraq - Four Iraqis were killed on Sunday, including three children, in attacks in Diyala and Kirkuk.

The three children were killed when a bomb went off in the al- Khadraa neighborhood in south-west Kirkuk, Iraqi police told Voices of Iraq (VOI) news agency. No more details were reported.

Also in south-west Kirkuk, three people were injured in a detonation in the al-Howega district.

The multi-ethnic oil-rich city of Kirkuk lies 250 kilometres north- east of the Iraqi capital Baghdad.

In Diyala province, gunmen disguised in police uniforms broke into a house, killed a woman and wounded three others from the same family, police told VOI.

The suspected al-Qaeda militants kidnapped a fourth woman in the house raid, the police source added.

The Diyala province lies to the north-east of Baghdad. dpa