More than a year later, however, police recovered two other guns used in crimes, and ballistics tests revealed that the gun used in the third crime was the same one used in the 1975 shooting, thus proving that the gun turned in by the detective in 1975 was not used in the murder he had been investigating.
直到一年多後，在地方上又有其他刑案發生，經鑑識科一比對，發現該凶案所用的槍枝，試射後彈頭與原送驗現場彈頭來復線吻合，認系同一枝槍枝所擊發，足見原先外勤偵查員所交出的槍枝，並非槍擊案所用。案情於是急轉直下，後來也以此循線追捕偵破了。