Press TV reports.
Afghan officials say that the victims were all members of one family and that they were not affiliated to any political group.
Foreign forces have not yet commented on the incident that took place on Wednesday.
Civilian casualties inflicted by US-led troops have dramatically increased anti-US sentiments in Afghanistan.
The deaths have been the main source of friction between Kabul and Washington over the past years.
The US-led war in Afghanistan began in October 2001. The offensive removed the Taliban from power, but insecurity continues to rise across the country, despite the presence of about 130,000 US-led troops.
At least five people have been killed in an air strike carried out by US-led forces in the eastern Afghan province of Nuristan,