“Normally the investigating officer is required to produce all the relevant documents at the time of submitting the charge sheet. At the same time, as there is no specific prohibition, it cannot be held that the additional documents cannot be produced subsequently. If some mistake is committed in not producing the relevant documents at the time of submitting the report of charge sheet, it is always open to the investigation officer to produce the same with the permission of the Court. ....... Normally, the documents gathered during the investigation upon which the prosecution wants to rely are required to be forwarded to the Magistrate but if there is some omission, it would not mean that the remaining documents cannot be produced subsequently. .... Further, the scheme of subsection (8) of Section 173 also makes it abundantly clear that even after the charge sheet is submitted, further investigation, if called for, is not precluded. If further investigation is not precluded then there is no question of not permitting the prosecution to produce additional documents which were gathered prior to or subsequent to investigation. In such cases, there cannot be any prejudice to the