Two American NATO-led troops were killed by an Afghan Border Police officer Monday, a local official told CNN.
The victims were teaching a group of border policemen in a meeting room in Faryab in northern Afghanistan, according to the deputy governor of Faryab province, Abdul Sattar Bariz.
The gunman escaped on foot, running toward the desert, Bariz said.
"Initial reports say that there were about six Americans inside the meeting room and only two of them have been killed," he said, adding that he did not have many other details.
NATO's International Security Assistance Force said earlier two NATO troops had been killed after an individual wearing an Afghan police uniform opened fire.Read the full story
CNN's Fareed Zakaria discusses the Quran burning by an extremist Florida pastor and the violent reprisals in Afghanistan.
Top U.S. officials in Afghanistan on Sunday condemned the burning of a Quran in the United States that sparked three days of protests in which more than 20 people died.
Burning the Muslim holy book "was hateful, it was intolerant and it was extremely disrespectful and again, we condemn it in the strongest manner possible," said Gen. David Petraeus, who heads the U.S.-led international forces in Afghanistan.
U.S. Ambassador Karl Eikenberry said in a statement that Americans respect the Quran "and all religious texts and deplore any action that shows disrespect to any religious faith."
"At the same time, I want to emphasize, as have many Afghan leaders, that to attack and kill innocent people in response to the deplorable act of one individual is outrageous, and an affront to human decency and dignity," Eikenbery's statement said.