National Small Industries Corporation Ltd. (NSIC) and, as such, were required to submit the tender document fee of Rs.2,000. From the replies received from South Eastern Railways, Kolkata, it was noted by the DG that the Demand Drafts (DDs) amounting to Rs.2000/- towards payment of tender documents fee of M/s Mam Kaur Poly Machines Pvt. Ltd., New Delhi and M/s Vee Kay Industries, Delhi vide Nos.663178 and 663177 respectively both dated 19.07.2010 were in sequence and hence made from the same banker and at the same time. Similarly, DDs amounting to Rs.2000/- of M/s Vikrant International, Faridabad, Haryana and M/s Modern Ex-serviceman Engineering Pvt. Company Pvt. Ltd., Punchkula, Haryana vide Nos.036441 and 036440 respectively both dated 17.07.2010 were in sequence and hence made from the same banker and at the same time. Investigation, however, could not ascertain the name and address of banks from where DDs were made because the information in this regard could not be made available by South Eastern Railways, Kolkata which informed vide its letter dated 01.05.2012 that since the details qua name and branch address of banks issuing DDs towards cost of tender documents were in no way related to the finalization of the tenders, these records were not maintained by the railways. In this connection, it was noted by the DG that out of 29 firms, 14 firms were not registered with NSIC and therefore were required to submit tender fee of Rs. 2000/-. Further, the DG opined that though the South Eastern Railway was not able to give details of such DDs submitted by these parties, considering the similarity of the contents of tender documents, the possibility of DDs having been made from one bank in respect of firms appearing in different groups could not be ruled out. The fact of DDs having been submitted from one bank or set of banks by different banks was corroborative evidence to show some kind of collusion in rigging the bids, noted the DG.