Details of Kalmadi's links to dubious decisions taken during his tenure as chief organiser are with the V K Shunglu committee probing an array of Games-related irregularities. The evidence was turned up by private experts engaged by the committee who examined computer and email records at the OC office.
Sources said the experts did not find it easy to scour through the electronic records, many of which were obliterated and others fudged or tampered with. But despite being able to look at the record weeks after the Games concluded, they have hit on Kalmadi's footprint.
The evidence gathered is believed to be substantial, although not many details are available. The linkages are believed to be strong enough to bolster the case against the former OC boss and his associates, some of who are already in jail.
The electronic record will be useful as conclusive evidence is not easy to come. The OC's filing and record keeping systems are poor and vulnerable to tampering. Several papers are missing and sources said the file work does not have the careful cross referencing that makes it difficult to take out a noting from a government file.