Drew Peterson has been transferred out of custody of the Illinois Department of Corrections and into federal prison, sources said Tuesday.

Peterson was transferred to a federal prison in Terre Haute, Ind., a source said. Another source confirmed Peterson is in federal custody.

The former Bolingbrook police officer convicted of killing his third wife and trying to arrange a hit on the prosecutor who put him behind bars had been incarcerated at Menard Correctional Center in downstate Chester.

IDOC spokesman Nicole Wilson released the following statement:

"Drew Peterson has been transferred out of IDOC custody. For safety and security purposes, the IDOC does not discuss details concerning the placement of offenders who are transferred under the terms of the Interstate Compact Agreement."

Timeline: The Drew Peterson case Tribune Graphics Disappearance, death, a murder-for-hire plot and a made-for-cable movie, the saga of former Bolingbrook police officer Drew Peterson spans over two decades. Here are notable events in the Peterson saga: 1992 Kathleen Savio, Savio family photo Kathleen Savio becomes Drew Peterson's third wife. The... Disappearance, death, a murder-for-hire plot and a made-for-cable movie, the saga of former Bolingbrook police officer Drew Peterson spans over two decades. Here are notable events in the Peterson saga: 1992 Kathleen Savio, Savio family photo Kathleen Savio becomes Drew Peterson's third wife. The... (Tribune Graphics)

Peterson's fourth wife, Stacy, disappeared nine years ago. He is the sole suspect in her disappearance, authorities have said, but he has not been charged with a crime related to her case.

Will County state's attorney spokesman Chuck Pelkie said IDOC's decision to transfer Peterson out of its custody had no connection to the ongoing investigation into Stacy Peterson's disappearance.

Drew Peterson's adult son Stephen told the Tribune last month that he believes his father killed his third wife, Kathleen Savio, and is responsible for Stacy's disappearance as well.

Peterson was convicted last year of trying to arrange from prison for a hit man to kill Will County State's Attorney James Glasgow.

kthayer@chicagotribune.com

cmgutowski@chicagotribune.com

mwalberg@chicagotribune.com

Twitter @knthayer

Twitter @christygutowsk1

Twitter @mattwalberg1

Our editors found this article on this site using Google and regenerated it for our readers.