article_snippet: The former US Marine who killed American Sniper Chris Kyle and Chris Kyle friend Chad Littlefield has been moved into a psychiatric prison for evaluation of whether Chris Kyle should be moved into the general prison population.
article_snippet: Eddie Ray Routh was convicted on February 28 of double murder and sentenced to life in prison without parole.
article_snippet: This new picture of Eddie Ray Routh shows Eddie Ray Routh after Eddie Ray Routh was admitted to the Texas prison system following Eddie Ray Routh February 28 conviction for the murders of 'American Sniper' Chris Kyle and Chad Littlefield .
article_snippet: Eddie Ray Routh, pictured here during Eddie Ray Routh trial, argued that Eddie Ray Routh was insane and not criminally liable when Eddie Ray Routh killed Chris Kyle and Chad Littlefield in 2013 .
article_snippet: Chris Kyle (left) and Chad Littlefield (right) were gunned down after taking Eddie Ray Routh to a shooting range .
article_snippet: Kyle appears thinner since Kyle last appeared in public on the day of Kyle murder conviction.
article_snippet: The 2013 murder of Kyle, a Navy SEAL who wrote the best-selling book American Sniper, and Kyle friend Littlefield drew nationwide attention.
article_snippet: Kyle is the deadliest sniper in American history, with 160 confirmed kills.
article_snippet: Kyle trial took place not long after the release of 'American Sniper' the movie, an Oscar-winning biopic that starred Bradley Cooper as Kyle.