However, police officials claimed that the role of an "insider" has emerged in the case. It has also been learnt that the robbers spoke in Haryanvi dialect following which a series of raids have been carried out in Haryana.
Investigators said that other than probing yesterday's robbery near busy Lajpat Nagar area in south Delhi, they are also inquiring the source of the money. They are investigating a possible hawala trail in the case.
Police called Rajesh Kalra, whose name had also cropped up as a bookie in the 2000 Hansie Cronje match fixing case, and his partner Gurgaon-based businessman Rahul Ahuja, to whom the cash apparently belonged.
While Kalra joined the investigation, Ahuja did not reach the Special Staff office at Madangir. There are also apprehensions that the looted amount could be well more than what has been reported.
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Kalra and all the five employees, including Ahuja's manager Rakesh Kumar, who were in the car at the time of the incident, were questioned about the source of the money and the robbery itself, police sources said.
During questioning, Sandeep's version of events has been found contradictory and he is under police scanner.
Investigators have also learnt that Ahuja's manager, Rakesh Kumar Sharma, who was present in the Honda City car along with four associates when the robbery took place had employed and then subsequently fired some youths in the last couple of months.