Even though the samples were drawn on 17.06.2000, the same, including the properties involved in the case, were seen first produced before court on 14.07.2000 only. On that date, the said properties were returned for safe custody and production at a subsequent time. Subsequently, the same were seen produced on 26.07.2000, as is evident from Ext.P4 property list. There is no explanation as to how such an inordinate delay has occurred in the production of samples before the court. When there is unexplained inordinate delay in the production of samples before court, the chances of tampering with the samples cannot be ruled out. There is no evidence to show as to who was the custodian of the properties, till its production before the court. Matters being so, it is not at all safe to rely on Ext.P5 for entering in a conviction against the appellant. Hence, the conviction and sentence passed by the court below are liable to be set aside.