A Texas jury reached a guilty verdict in the murder trial of Eddie Ray Routh, the ex-Marine charged with killing former U.S. Navy SEAL Chris Kyle, author of the memoir American Sniper.

Routh was sentenced to life in prison without parole for shooting Kyle and his friend Chad Littlefield to death at a gun range near Fort Worth in 2013. Defense lawyers had argued that Routh suffers from paranoid schizophrenia; Routh had pleaded not guilty by reason of insanity.

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