A former suburban Chicago police officer suspected in his wife's disappearance is offering a $25,000 reward for information leading to her safe return.

Drew Peterson said in a statement Wednesday that he had hoped his wife, Stacy, would have contacted him by now. He says he "can't fathom why" she hasn't.

Peterson's attorney Joel Brodsky says investigators hired by Peterson, not Peterson himself, will read submitted tips.

Police say Peterson is a suspect in his wife's October disappearance and call the case a possible homicide. Peterson has denied any involvement and suggests his wife may have left him for another man.

Authorities are also investigating the 2004 death of Peterson's ex-wife, Kathleen Savio. Peterson has not been charged in either case.