Guilty of Murder 

The man charged in the stabbing death of a 23-year-old mother from Fayette more than 25 years ago has been found guilty of murder. 52-year old Thomas Mitchell, Jr. took the witness stand monday to testify in his own defense and denied killing her.Jurors deliberated for about 90 minutes Tuesday.Prosecutors told jurors that advances in DNA technology provided proof that Mitchell raped and killed Judith Flagg at her home in January 1983.One of Mitchell’s lawyers said the DNA evidence was contaminated and could have belonged to others.Mitchell says he spent the day of Flagg’s death in South Portland with his aunt.Mitchell was arrested in 2006 while in prison completing sentences for kidnapping, gross sexual assault and attempted murder.