"...investigators said they may never determine what compelled the Fort Hood soldier to kill three soldiers and wound 16 others before taking his own life."
National/World Ivan Lopez, Fort Hood gunman motive may never be known Updated at 07:54 AM today TAGS: national/world Comment Now Email Print Report a typo April 6, 2014 (FORT HOOD, Texas) -- Despite evidence that suggests Spc. Ivan Lopez had an argument before going on a shooting rampage, investigators said they may never determine what compelled the Fort Hood soldier to kill three soldiers and wound 16 others before taking his own life. Lt. Gen. Mark Milley, Fort Hood's commander, said that an "escalating argument" precipitated the assault. He declined to discuss the cause of the argument but said investigators believe Lopez made no effort to target specific soldiers - even though at least one of the soldiers shot was involved in the dispute. Related Photos Scenes from mass shooting at Ft. Hood View all 12 photos Milley would not say whether those involved were among the dead or wounded, or how many shoo