Former Air Force chief S.P Tyagi will be questioned by the Central Bureau of Investigation for the third day on Wednesday, in connection with the controversial Rs 3,600-crore AgustaWestland chopper deal.

The CBI had earlier said that the former IAF chief has admitted to have financial interest in three companies -- Banshi, Anuras and Shavan -- involved in the chopper deal.

The agency further stated that Tyagi has accepted that he met COO of Finmeccanica Zapa in 2005 in India. The CBI also said the former IAF chief and his wife are the owners of the three companies in addition to a fourth company -- Meghanshu -- and added that all the four companies are based in Noida.

The agency had registered a case against Tyagi along with 13 others including his cousins and European middlemen.