Kandahar, Aug 5 (DPA) Residents in the southern Afghan province of Kandahar said Wednesday that a NATO airstrike killed four civilians, including three children, while a roadside bomb killed six civilians in eastern Afghanistan.

Dozens of residents from Arghandab district brought the four bodies to Kandahar city Wednesday morning to show them to provincial authorities. The tribal men said that the civilians were killed Tuesday night when a NATO helicopter bombed their house.

'They were sleeping inside their yard when the helicopter came and hit them,' Haji Manan Jan, one of the residents who was accompanying the group, told DPA.

'Every time they (foreign forces) bomb us and kill us and then simply say that it was a mistake,' Abdul Baqi, another resident of Arghandab said, adding, 'The government must do something about it, or they should let us to do something.'

Two more civilians were wounded in the air raid and were taken to a Kandahar city hospital for treatment, he said.

A NATO spokesman in Kabul said that he could confirm that there was an incident involving alliance forces in the area, but said that further information would be available once an ongoing investigation is complete.

Civilian casualties during the international military operations have become a delicate issue in the country.