Report: NATO friendly fire kills Afghan forces

The Afghan national police officers were killed and two others wounded after NATO attack helicopters opened fire on their position in Ghazni province in eastern Afghanistan, government officials told Voice of America. 

NATO investigators are on location in Ghazni investigating how the Afghan police ended up being targeted by the alliance's gunships. 

Afghan president Hamid Karzai has blasted U.S. and allied commanders for their excessive use of airpower during the war. 

In February, Karzai banned all Afghan national military and police units from calling for American and NATO air strikes during anti-Taliban operations in the country. 

That month, coalition airstrike called for by Afghan intelligence officials killed approximately 10 civilians, as well as four Taliban fighters, in Kunar province in southern Afghanistan. 

Marine Corps Gen. Joseph Dunford, the top U.S. commander in Afghanistan, said at the time that Karzai's edict would not affect the Pentagon's transition of its forces from frontline troops to advising Afghan units. 

Despite the ban, U.S. commanders would continue to carry out “effective operations within the president’s guidance" to help Afghan forces drive the Taliban out of the country, he said.

Ghazni is part of the band of provinces in eastern Afghanistan known as the "Pashtun heartland" for the Taliban. U.S. and allied commanders are focusing their efforts for this years fighting season on those areas. 

This fighting season will likely be the last for the 66,000 American troops in Afghanistan, who are preparing to pull out of the country this spring. The final group of those U.S. forces are expected to leave the country next April.