Sister of missing woman fears her sibling is dead

The sister of the missing wife of a suburban Chicago police sergeant said she believes Stacy Peterson is dead.

"I'm just going to find her, bring her home and bring whoever did this to justice," said Peterson's sister, Cassandra Cales.

Peterson, 23, was reported missing Oct. 29. The mother of two is the wife of Bolingbrook Police Sgt. Drew Peterson, who has suggested she left him for another man.

Illinois State Police said the woman's disappearance is being investigated as a missing person case and foul play is not suspected.

Volunteers searched forests near the couple's home over the weekend.

"I guess if it were my daughter, I'd want everybody in the world out there looking for her," Georgia Szkolny, of New Lennox, said Sunday. "I can't imagine what her family is going through."

On Friday, state police sent divers into a retention pond near the Peterson's home.

Drew Peterson, 53, has claimed his wife suffered from "mood issues" since a sister died last year.

But Stacy Peterson's family has said she feared her husband, was making plans to divorce him and would not have willingly left her children.

Drew Peterson's former wife, Kathleen Savio, 40, was found dead in a bathtub in March 2004.

The death was ruled accidental by a coroner's jury, but the Will County state's attorney's office has said it will re-examine the death in light of recent events.

A phone listing for Drew Peterson could not be located Sunday.