The missing wife of a former police sergeant told a clergyman in August that her husband confessed that he killed his former wife and made it look like an accident, according to a report.

A source told the Chicago Sun-Times that Peterson also told two other people about her husband's confessions to her about the death of Kathleen Savio, his third ex-wife.

Stacy Peterson, a mother of two and Drew Peterson's fourth wife, was reported missing on Oct. 29 by her family after she failed to show up to a friend's house. Drew Peterson is a suspect in her disappearance.

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Kathleen Savio, was found dead in her bathtub in 2004, and at the time, her death was ruled accidental. Savio died shortly before her divorce settlement with Drew Peterson was settled.

Stacy told her husband she was leaving him and divorcing him the day before she was reported missing by her family, telling him to be out of the house in a few days, according to the source.

Meanwhile, Drew Peterson did not show up to work on the night that Stacy disappeared, FOX News learned Wednesday.

Peterson, who recently resigned from the Bolingbrook Police Department, was scheduled to work at 5 p.m. Oct. 28 but called in to take a personal or sick day, Bolingbrook police Lt. Ken Teppel told FOX News.

"Peterson called in sick for Sunday night (Oct. 28)," Teppel said. "The call was taken by a dispatcher in the afternoon."

A key witness told a friend he might have helped transport the body of Peterson's wife, according to a Chicago Tribune report. That witness — Drew Peterson's step brother-in-law — allegedly helped move a barrel that was warm to the touch from Peterson's bedroom to an SUV.

Two days later, the distressed relative, Tom Morphey, was hospitalized after an alleged suicide attempt, the Tribune reported.

Joel Brodsky, Peterson's attorney, said Morphey has a history of mental problems, alcoholism and suicide attempts, and that he might want attention or living in "a fantasy world," Brodsky said.

The Wednesday after Stacy disappeared, Drew Peterson asked his next-door neighbor to watch the kids after his Morphey tried to commit suicide, said neighbor Sharon Bychowski.

Bychowski, one of Stacy's best friends, told FOX News that Peterson had a lack of emotion and dismissive attitude when he returned from the hospital to pick up the kids. Bychowski asked Peterson if everything was okay and he responded, "What? Oh. He lost his job. Lost his family. Go figure."