A former suburban Chicago police officer has been given an extra 40 years in prison for trying to hire someone to kill the prosecutor who put him behind bars for the death of his third wife.

Drew Peterson told the judge Friday before he was sentenced that he never wanted Will County State's Attorney James Glasgow killed and claimed to know all along a fellow inmate was recording their conversations.

The 62-year-old already is serving a 38-year sentence at the Menard Correctional Center for the murder of his third wife, Kathleen Savio.

Though he is scheduled for parole in 2047, Friday's sentence must be served consecutively, making it likely Peterson will die in prison.

At his sentencing for killing Savio, Peterson screamed: "I did not kill Kathleen!"