The CBI may have made little progress in solving the murder of IIT engineer Satyendra Dubey—it announced a Rs 1-lakh award this month—but in one aspect of the case, perhaps the most critical one, it’s moving forward: the agency has found merit in the corruption allegations Dubey made in his letter to the Prime Minister’s Office. Enough merit to identify at least four possible criminal cases against dozens of private contractors and some officials of the National Highway Authority of India working on the Aurangabad-Barachhatti stretch of the Golden Quadrilateral. Each of these cases identified involves contracts worth Rs 100 crore or more. Last fortnight, details of the proposed cases were sent for approval to CBI director U S Mishra. Because formal registration of such cases is usually preceded by ‘‘search-and-seizure’’ operations, the CBI’s findings are being kept under wraps. CBI officials said that after scrutinizing ‘‘trunkloads of documents’’ collected by them during the probe, they have been able to confirm “four of the six areas’’ of corruption highlighted by Dubey. These are: procurement of civil contracts, mobilising of contracts and advances for projects, the practice of projects being sub-contracted and the ‘‘systemic failures’’ of the NHAI in the award of the contracts. Officials said that a scrutiny of documents together with site inspections revealed that in some cases, violating norms, huge mobilisation advances were paid in just two days instead of the stipulated 30. It has also been found that some private contractors had illegally sub-contracted works to a second, third, even fourth party. Dubey • Project reports on the basis of which tenders are called are like ‘‘garbage’’ • Procurement ‘‘completely manipulated and hijacked’’ by contractors who are submitting forged documents • Big contractors favoured by NHAI officials and even note-sheets approved by the Chairman are leaked • Most works sub-let or sub-contracted to small petty contractors who compromise on quality CBI • Corruption cloud in procurement, mobilising of contracts and advances • Irregularities in sub-contracts • Huge advances paid in just two days instead of stipulated 30 • Sub-standard material and poor equipment used by sub-contractors, inflated bills sent to NHAI