In 1998, Kevorkian was arrested and tried for his role in the voluntary euthanasia of a man named Thomas Youk who had Lou Gehrig's disease, or ALS. He was convicted of second-degree murder and served eight years of a 10-to-25-year prison sentence. He was released on parole on June 1, 2007, on condition he would not offer advice about, participate in, or be present at the act of any type of euthanasia to any other person, nor that he promote or talk about the procedure of assisted suicide.[4]