The soldier suspected of shooting dead three people before killing himself at the Fort Hood Army base in Texas was identified as Ivan Lopez, a man battling mental illness when he went on a rampage, the base commander said on Thursday.
No motive was given for the shooting spree on Wednesday, which also left 16 wounded in what was the second mass killing in five years at one of the largest military bases in the United States, raising questions about security at such installations. Officials have so far ruled out terrorism.
"We have very strong evidence that he had a medical history that indicates unstable psychiatric or psychological conditions," Lieutenant General Mark Milley told reporters.