The young man who pleaded guilty in the fatal stabbing of Robert and Ellen Sheldon at their home outside Carthage was found dead in his jail cell this morning. Jasper County Sheriff Archie Dunn says Matthew Laurin was seen by counselors this morning. The 20 year old man said he was not depressed but was angry. Jailers found Laurin hanging by a bedsheet. Laurin pleaded guilty to killing the couple earlier this week. Robbery was the motive.