The gunman who opened fire, killing four, including himself, at Fort Hood was an Iraq war veteran who was treated for mental illness.
FOX News Radio's Jared Halpern has more from Capitol Hill:
Before enlisting in the Army in 2008, 34-year-old Ivan Lopez spent 11 years in the Puerto Rico National Guard.
He spent four months as a truck driver in Iraq, but saw no combat and more recently was treated for depression, anxiety and sleeplessness. Army Secretary John McHugh says Lopez met with a psychiatrist last month.
(McHugh) "We had no indication on the record of that examination that there was any sign of likely violence."
The weapon used was recently purchased, but military rules prohibit carrying private weapons on Post without proper authorization from a commander.
That authority was not given to Lopez.
On Capitol Hill, Jared Halpern, FOX News Radio.
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