JOLIET, Ill. (AP) - Disputed autopsies on Drew Peterson's third wife are expected to be a focus of the former Illinois cop's murder trial as it enters its third week.

Jurors return to the Joliet courthouse Tuesday after a three-day break.

A key point of contention is whether the alleged victim, Kathleen Savio, was even murdered.

Her body was found in a bathtub at her home in 2004 and authorities initially ruled she drowned accidentally.

But suspicion fell on Peterson after his fourth wife, Stacy Peterson, disappeared in 2007. Savio's body was then exhumed, reexamined and her death reclassified as a homicide.

Prosecutors are expected to call those who performed the new autopsy to explain how they reached their conclusion. Peterson's attorneys say the initial finding was correct, that Savio's death was an accident.

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