CHESTER, Ill. (AP) — Former suburban Chicago police sergeant Drew Peterson is due back in court as his trial on charges of plotting to kill a prosecutor approaches.

A hearing in the case is scheduled for Tuesday in the southern Illinois county where Peterson is imprisoned.

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He’s pleaded not guilty to charges of soliciting an unidentified prison inmate to kill Will County State’s Attorney James Glasgow.

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Glasgow prosecuted the 2012 case in which Peterson was sentenced to 38 years in prison for the bathtub drowning death of his ex-wife Kathleen Savio eight years earlier. Her death was initially ruled an accident, but the case was re-opened after the 2007 disappearance of Peterson’s fourth wife.

The Randolph County trial was scheduled to begin Monday, but has been rescheduled to start on August 28.

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