CBI is likely to question former Indian Olympic Committee Chairman Suresh Kalmadi in connection with alleged irregularities in Rs 70-crore contract given to a firm Event Knowledge Systems for the 2010 Commonwealth Games.
The agency had registered the case last year naming Kalmadi and other senior officials of the Organising Committee of CWG, CBI sources said.
They said Kalmadi is likely to be called this week in connection with the probe.
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The contract has come under criticism from the Prime Minister-appointed Shunglu Committee which had said the entire contract was a "mockery" of Quality Based Selection.
Kalmadi is already facing a number of cases relating to alleged corruption during the conduct of Commonwealth Games which are under the probe of the agency.