CBI on Friday will question cousins of former Indian Air Force chief SP Tyagi--Sanjeev and Rajeev-- about finances, firms established by them and their relations with European middlemen in AgustaWestland VVIP helicopter deal.
Reportedly, the questioning will revolve around accounts of IDS Tunisia and remittances received by it.
It is believed that their firms were used to route alleged bribe money in India.
Former Air Force chief SP Tyagi has called earlier for a several rounds of questioning.
Sanjeev Tyagi has not denied his relations with European middlemen Guido Haschke and Carlo Gerosa saying that they know him five to six years before the order was placed.
Earlier, he has said that the payments received by him were for power sector jobs which were all received through proper banking channels with income tax paid on them. He has said that payments received from middlemen were not for helicopter deal but for some power sector job.