California Gov. Gavin Newsom overruled a parole board’s decision to free Charles Manson follower Leslie Van Houten on Monday, marking the third time a governor has stopped the release of the youngest member of Manson’s murderous cult.

Van Houten, 69, is still a threat, Newsom said, though she has spent nearly half a century behind bars and received reports of good behavior and testimonials about her rehabilitation.

“While I commend Ms. Van Houten for her efforts at rehabilitation and acknowledge her youth at the time of the crimes, I am concerned about her role in these killings and her potential for future violence,” he wrote in his decision. “Ms. Van Houten was an eager participant in the killing of the LaBiancas and played a significant role.”

Read more HERE