occurred, investigators couldn't find it anywhere in the area near her body. when police checked her cell phone records, they discovered someone had used her cell phone after her murder. >> one of the numbers called, a person told us that subject juan sanchez had called them. >> investigators tracked 23-year-old juan sanchez to his residence, and there, they found kathy's cell phone in his possession. but sanchez claimed he found the phone on the jogging path. >> he explained to us that he was riding his bike on the canal trail and he found the cell phone. he decided to use it for his personal use. >> sanchez showed police exactly where he found the phone. remarkably, it was just 50 feet