A memo says Illinois prison officials wanted Drew Peterson transferred to a federal prison because the former suburban police officer convicted of killing his third wife and plotting to kill the prosecutor, posed a danger to the prison.
An official says Peterson was a threat to the safety and security of the department. The official recommended monitoring Peterson's mail and phone calls. Peterson was transferred last month from the Menard Correctional Center in Illinois to a federal prison in Terre Haute, Indiana.
Peterson is serving a 38-year prison sentence in the 2004 slaying of Kathleen Savio, he was convicted last year of trying to hire someone to kill the prosecutor. He's also a suspect - though not charged - in the 2007 disappearance of his fourth wife, Stacy Peterson.
