‘Inmate mail’: Georgia man faces 3rd prison stint for threatening letters
www.ajc.com
The letter to the federal judge, purportedly written by a U.S. Secret Service agent who previously investigated Travis Leroy Ball, demanded that Ball’s case be dismissed and the defendant be released from prison. But the letter, which was handwritten, was also clearly stamped with the designation “INMATE MAIL.”

From the Atlanta Journal Constitution Crime News:

Travis Leroy Ball, 56, of Barnesville, has spent the bulk of the past seven years in federal prison for threatening violence against government officials and others.