Police have been able to deduce several very specific clues to the perpetrator's identity, but have been unable to produce or apprehend a suspect. It was determined that the killer had eaten string beans and sesame seeds the previous day after analyzing feces from the killer in the Miyazawas' bathroom.[1] They determined that the clothes and Sashimi knife left behind by the killer had been purchased in Kanagawa Prefecture. Police also learned that only 130 units of the killer's sweater were made and sold, but they have only been able to track down twelve of the people who bought the sweaters.[2] Trace amounts of sand were also found inside the hip bag that the perpetrator left at the scene, which after analysis was determined to come from the Nevada desert, more exactly the area of Edwards Air Force Base in California.