Deepakbhai Panchal along with his wife Roopalben are the prime accused by CBI and the market regulator SEBI in the IPO scam. Their actions have triggered a series of investigations resulting now in the ban on 24 operators. CBI sources say it was a 'well-orchestrated effort' by the Panchals in which they tied up with three broking houses based out of Ahmedabad including H Nihalchand & Sons.