The terrorist ISIS group fighters may have used chlorine gas shells in an attack on Kurdish forces in northern Iraq, dpa cited confidential German army report as showning on Thursday. It said the chemical weapons were "apparently" deployed Wednesday in an attack on Makhmur, where both Arabs and Kurds live, and 60 Kurdish fighters were injured. A German intelligence unit obtained accounts of the attack from a meeting with tribal leaders. Some 88 German military personnel were 60 kilometres away in the Kurdish capital Erbil at the time. The Germans are training Kurdish Peshmerga and Yazidi fighters to fight terrorist ISIS using German-supplied weapons.