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Former NFL star Arthur Jones -- the brother of UFC legend Jon Jones and football player Chandler Jones -- has died, the Baltimore Ravens announced Friday.

He was 39 years old. Getty

Details surrounding his death have not been announced.

Jones - a Super Bowl champion in 2013 -- played for Baltimore, Indianapolis and Washington during his seven-year career. Getty

He was a fifth-round pick out of Syracuse in 2010 ... earning all-conference honors in three seasons.

"Arthur's presence was a gift to everyone he encountered," the Ravens said. "His big, bright smile, infectious energy and eternal positivity created a presence that continuously uplifted others." Getty

"He was kind, courteous and enthusiastic -- always displaying a love fo

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