several leads were followed in the investigation by illinois state police with fbi involvement. four search warrants were issued and carried out on peterson's property following stacy's disappearance, including the seizure of his firearms and both his and stacy's vehicles. peterson announced his plans to retire as a bolingbrook police sergeant effective december 2007. on november 15, the bolingbrook police pension board voted to allow peterson to collect his pension of $6,067.71 per month, stating current law gave them no option, as he had not been convicted of a crime.