Illinois ? State police sent divers into a retention pond Friday near the home of a suburban Chicago police sergeant whose wife disappeared Sunday and whose former wife was found dead in her bathtub in 2004.

A search warrant was executed Thursday at the home of Drew Peterson, whose wife, Stacy, was reported missing after she didn’t show up at a relative’s house. Investigators led cadaver dogs around the couple’s home.

Peterson, 53, a sergeant in the Bolingbrook Police Department, has said his 23-year-old wife called him Sunday night and told him she was leaving. He said he believes she left him for another man.

Her family said she was afraid of her husband and was making plans to divorce him. “She told me Friday night she feared for her life,” said her younger sister, Cassandra Cales.

Cales also said her sister had planned to meet with a divorce attorney Monday.