Six young men found shot in the head in western German city of Duisburg . Five were dead when authorities arrived , two died later . The victims were between 15 and 18 years old , police say . Police believe the murders may be linked to organized crime in Italy .
Six young Italians found shot in the head in western German city of Duisburg . Five were dead when authorities arrived , one died later . The victims were between 16 and 39 years old , police say . Police believe the killings may be linked to organized crime in Italy .