Several weapons were found at the scene, including semi-automatic rifles, semi-automatic handguns and revolvers, the station reported.
Kyle served in the Navy from 1999 to 2009 and served four tours in Iraq, where he was credited with more than 160 kills.
He received 14 different awards and decorations, including two Silver Stars and five Bronze Stars, and wrote the best-selling book, "American Sniper: The Autobiography of the Most Lethal Sniper in U.S. Military History."
Chris Kyle's best seller told of his military exploits from 1999-2009.
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Chris Kyle's best seller told of his military exploits from 1999-2009. .
In the book, he claimed Iraqi insurgents nicknamed him al-Shaitan, or "The Devil," and put a $20,000 bounty on his head.
Routh's post-war path was more troubled.