Fort Hood Gunman Had Argument Prior to Attack

Military investigators say the Fort Hood soldier who shot and killed three people, and injured 16 others, was involved in a verbal altercation with soldiers shortly before the attack on the Texas army base. Chris Grey, a spokesman for the U.S. Army Criminal Investigation Command, says 34-year old Army specialist Ivan Lopez may have argued with soldiers from his unit shortly before opening fire. Grey says, however, that a "concrete motive" has not been established.Authorities say...

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