Bradley County family believes bones found in Colorado may be missing son's remains

Family photo of Joe Keller taken before he went missing in Colorado last year.

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* Bones found in Colorado could be Joe Keller's, but concerned citizens getting few answers about case * Local teen Joe Keller's missing person case stirs debate * Bradley County sheriff's team will search for missing teenager Joe Keller in Colorado * Parents plead to social media to help find vanished son

photo Family photo of Joe Keller taken before he went missing in Colorado last year.

photo Neal Keller, left, and Zoe Keller meet with reporters in the office of Bradley County Sheriff Eric Watson, right, on Thursday, Sept. 10, 2015, in Cleveland, Tenn. The Keller's son, Joe Keller, is missing in Colorado.