Foreign troops accidentally killed three children in southeastern Afghanistan's Paktika province today, the Nato-led force said.
Troops fired artillery rounds after a patrol came under fire from insurgents in Gayan district of the southeastern province, the International Security Assistance Force said in a statement.
The rounds fell close to a house where three children were later found dead. Seven civilians were wounded.
"ISAF deeply regrets this accident, and an investigation as to the exact circumstances of this tragic event is now under way," the ISAF statement said.
Earlier today, hundreds of protesters blocked a road in Kabul accusing US-led troops of killing three members of a family, including two children, in a separate raid in the east of the capital.
Residents said US-led troops carried out a pre-dawn raid in Hud Kheil area in the eastern quarter of Kabul, killing a man and two of his sons.
Reuters