( CNN ) -- A second man charged with murder in the 2011 disappearance of Tennessee nursing student Holly Bobo told a judge he was innocent Wednesday . Jason Wayne Autry , who is already in prison for an unrelated assault conviction , was indicted on especially aggravated kidnapping and first-degree murder charges by a special grand jury on Tuesday , Tennessee Bureau of Investigation Director Mark Gwyn said . Autry , 39 , was a longtime friend of Zachary Adams , 29 , who was indicted last month on the same kidnapping and murder charges . `` Your honor , I want to say one thing -- I 'm innocent of these charges . Right hand before God , I 'm innocent , sir , '' Autry said in court . Adams also appeared Wednesday in court , where a not guilty plea was entered for a coercion of a witness charge . Bobo was 20 when she was last seen on April 13 , 2011 . Her brother told authorities he saw a man in camouflage leading her away from their home in the small town of Darden , Tennessee . Information from `` several witnesses '' led to charges against Autry , Gwyn said . Investigators `` believe there are more people with information and possible involvement , '' Gwyn said . He told reporters to `` expect more announcements in the coming days and weeks . '' `` These individuals know who they are , and I 'm sure they are watching , and they can expect us to be on their doorstep pretty soon , '' Gwyn said . The Bobo case rocked the largely rural swath of central Tennessee . Many knew the young woman and many rallied behind the effort to find her . Hundreds of volunteers turned out to help find her in Decatur , Henderson , Henry , Carroll and Benton counties . Many more attended memorial services or offered other support . More than $ 450,000 has been offered in reward money . Bobo 's body has not been found three years after her disappearance . CNN 's Alan Duke contributed to this report .
Suspect Jason Wayne Autry is already in prison for an unrelated assault conviction . `` Your honor , I want to say one thing -- I 'm innocent of these charges , '' he says . The judge asks him if he's willing to plead guilty and enter a plea deal with the prosecutor.