Associated Press
In this Aug. 31, 2012 photo, Alprentiss Nash, who was been behind bars since his murder conviction in 1995, walks free from the Menard Correctional Center in downstate Chester, Ill., after Cook County prosecutors dropped the case against him. Chicago Police said Wednesday, July 29, 2015, that Nash was fatally shot in Chicago, Tuesday, July 28 after after an argument during "some sort of transaction" between Nash and his attacker. (E. Jason Wambsgans/Chicago Tribune via AP)

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