At least 30 civilians were killed during recent fighting in the Afghan
They say that women and children were among the victims.
Nato-led forces have said that at least 135 Taleban fighters were killed in the clashes in the district of Shindand on Sunday and Friday.
On Monday Nato said it had used land and air strikes in Shindand and had no reports of any civilian casualties.
'Various sources'
Afghan officials and local people have told the BBC's Pashto service that more than 30 civilians died in the exchanges.
And
He said his information was based on "reports from various sources" from the area.
Shindand Governor Khodadad Erfani also said there were civilians among the dead, "but we don't have the number".
Meanwhile in the eastern city of
Hundreds of people - mostly students - briefly blocked a main road into the provincial capital and repeated calls for President Hamid Karzai to step down.
'Carelessness'
The death of civilians has been a major issue in
The alliance has been accused of carelessness over civilian lives when attacking Taleban fighters.
In December President Karzai tearfully accused coalition forces of "killing our children".
Nato said afterwards that efforts were under way to reduce civilian deaths in military operations.
But it said that it killed far fewer people in 2006 than the Taleban, who launched more than 100 suicide attacks.
Photo caption
Nato troops in