mr. plawer's background to indicate him being the target of a crime. >> after some digging, investigators learned two important pieces of information. first, the only store within 25 miles that sold 30-gauge blue, insulated, silver-coated copper wire was the local radio shack electronics store. >> since only one merchandiser sold that wire, if they kept records of their transactions, that that could prove helpful in getting a lead. >> and there was only one store that sold the igloo brand legend 12 cooler. >> we found out that that color scheme was only sold at walmart. so, that narrowed our focus then on where that cooler could have been purchased. >> theinvestigators got an anonymous tip that two students at oakwood high school might have been involved. >> one of them had a past criminal history, with one of the offenses being arson. >> one of the subjects had been seen in possession of a notebook that had handwritten on the front of it, "bomb recipes." >> the teenagers, 18-year-old jimmy morris and 16-year-old phil ryan, had no alibis for the time of the bombing. >> at first, they said