Created: 04/03/2014 4:39 PM WHEC.com
By: Associated Press
A Fort Hood official says the unstable mental condition of the gunman who killed three people and wounded 16 others at the Texas military base is believed to be an underlying cause of the attack.
Fort Hood's senior officer, Lt. Gen. Mark Milley, said Thursday that there's "very strong evidence" that Spc. Ivan Lopez had a medical history indicating an unstable psychological condition and that it was believed to a "fundamental underlying cause" in Wednesday's shooting.