NATO and Afghan army officials say six Afghan soldiers have been killed by friendly-fire in northern Afghanistan. Gen. Mohammad Zahir Azimi says several Afghan soldiers were wounded by the friendly fire in Kunduz on Friday night. Local government spokesman Muhboballuh Sayedi said Afghan commanders were meeting on Saturday with coalition forces to discuss what happened. It was not immediately clear whether the friendly-fire incident was related to a clash with Taliban fighters in which three German soldiers were killed on Friday. The German troops were attacked while on a bridge-building and mine-clearing mission southwest of Kunduz city.