The search is on in Bossier Parish for a man who`s been missing for 12 weeks. 21-year-old, Clinton Nelson was last seen in Princeton, Louisiana, September 1st, leaving a friend`s house on Ward Lane. Now, Texas Equusearch has been called in to help locate Nelson. The search crew received national recognition last year while they searched for Natalie Holloway. Saturday, they searched on foot, atv and horse back. They are trying to bring some answers to his family. "There is probably some drug activity, a heart condition, wether there is foul play or not we don`t know, the detectives are working that but they will never know until he`s found," Tim Miller,. Nelson has blue eyes and blonde hair. He was wearing a black tee shirt and blue jeans when he disappeared. The search continues Sunday Morning.