At least 52 Taliban insurgents were killed in the ongoing Qar-e-Maiwand military operation in southern Helmand province, the provincial governor's Office said in a statement on Thursday.

In addition, a number of other insurgents were injured.

The operation was launched more than a week ago and still ongoing in Lashkargah, Nehr-e-Siraj and Nad Ali districts of the province, according to the statement.

The statement said that foreign troop's air forces are supporting Afghan ground forces on the battle fields.

However, the statement did not provide more details about the operation nor on casualties among security forces.