A former suburban Chicago police sergeant, who's suspected in his wife's disappearance, has received a letter describing a sighting of his wife elsewhere in Illinois.
Drew Peterson's lawyer says his client hopes the unsigned letter will lead authorities to Stacy Peterson, who vanished three weeks ago.
Since then, authorities have said they believe the death of Drew Peterson's former wife was a homicide staged to look like an accidental bathtub drowning.
Peterson hasn't been named as a suspect in that case.
A close friend of Stacy Peterson's family is skeptical about the unsigned letter.
She says the family has received tons of letters from people claiming to know the missing woman's whereabouts.