In the months before killing his friend, and former Navy SEAL and American Sniper author Chris Kyle, Eddie Ray Routh had been taken to a mental hospital twice in the past five months and had also told authorities he was suffering from post-traumatic stress disorder, CBS News reported.

The hospital's check-in report shows that "Eddie stated he was hurting and that his family does not understand what he has been through."

Routh, 25, is being charged with one count of capital murder and two counts of murder for killing his friend, Chad Littlefield, and Chris Kyle at a shooting range in Texas.

Arrest warrants obtained by WFAA-TV show that Routh confessed to his sister and brother-in-law after the shootings that he "traded his soul for a new truck."

Routh has given no hints to indicate a motive for the shootings, according to USA Today.

SEE ALSO: Suspect Charged in Murder Of Ex-Navy SEAL

Routh was first taken to a mental hospital on Sept. 2 after he threatened to kill his family and commit suicide. Authorities found the twenty-five year-old wandering around Lancaster, where Routh lives, barefoot, shirtless and smelling of alcohol. Routh told the authorities he was a veteran suffering from post-traumatic stress disorder.

Other violent upsets alarmed Routh's family members. His mother told Police that her son became upset when his father said he was going to sell his gun. Routh became hysterical, started arguing with his parents and said he was going to "blow his brains out." He had been drinking.

Routh joined the Marines in 2006 and served in Iraq from 2007-08 and in the Haiti disaster relief mission in 2010.

Read the whole story at CBS News.

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