Autry received immunity in exchange for testifying against Zachary Adams.
His brother John denies any involvement and has not yet received a trial date In a confession which he has since retracted, John told officers his brother raped Holly and videotaped it.
Jason Autry, who was friends with him at the time, later told police he saw them at Adams' home.
Adams' brother John also told police he'd seen his brother with Holly and described how he was wearing camouflage shorts at the time.
Karen phoned 911, telling the operator frantically: 'Someone in camouflage has Holly!