The duo was arrested last monthfrom a Mahabaleshwar-based quarantine facility, nearly 50 days after the CBI bookedthem in a case of alleged bribery also involving former YesBank CEO Rana Kapoor.
The Wadhawans were produced before the special courthere on Friday at the end of their previous remand.
The centralprobe agency sought an extension of theircustody, saying they need to interrogate the duo further.
The Wadhawan brothers have been named accused in theCBI FIR pertaining to alleged swindling of money by Kapoor andothers, officials said.
The agency has alleged that Kapoor, 62, entered into acriminal conspiracy with the Wadhawans for extending financialassistance to DHFL through Yes Bank in return for "substantialundue benefits" to himself and his family members throughcompanies held by them.
According to the CBI FIR, the scam started takingshape between April and June 2018 when Yes Bank invested Rs3,700 crore in short-term debentures of the scam-hit DewanHousing Finance Corporation Ltd (DHFL).
In return, the Wadhawans allegedly "paid kickback ofRs 600 crore" to Kapoor and family members in the form ofloans to DoIT Urban Ventures (India) Pvt Ltd held by the wifeand daughters of Kapoor.
Besides the CBI, the duo was also being probedseparately by the Enforcement Directorate in connection withthe Yes Bank scam. AVIRSY RSY