FARAH, Afghanistan, May 20 (Xinhua) -- Eleven Taliban militants were killed after NATO-led coalition forces' planes struck Taliban positions in Afghanistan's western province of Farah overnight, local police said Monday.

"Up to 11 Taliban terrorist group fighters were killed following airstrikes launched by coalition forces in surrounding areas of Bala Buluk district, Farah province Sunday night," provincial police spokesman Muhibullah Muhib told Xinhua.

The strikes also destroyed four militants' vehicles in the restive district of provincial capital Farah city, the police official added.

The province has been the scene of heavy clashes between security forces and Taliban since early this year.

The Afghan security forces, backed by the NATO-led coalition troops, have increased ground and air offensives against militants within the past few months as spring and summer known as the fighting season is drawing near in the country.

The militant group has yet to make comments on the report.