Elizabeth Smart’s kidnapper has been transferred away from Salt Lake City and is on his way to the federal prison where he will serve a life sentence.

Brian David Mitchell was convicted of the 2002 kidnapping and rape of Elizabeth, then 14, after breaking into her home, forcing her at knife point to leave with him and sexually assaulting her almost daily during her nine month captivity.

He was sentenced to life in prison by U.S. District Court Judge Dale Kimball and he was transferred from the Salt Lake county jail and moved to an undisclosed federal prison on Wedneday.