The agency filed a plea in this regard before Special CBI Judge Swarana Kanta Sharma who has listed the application for hearing tomorrow.
"An application seeking directions to be issued to accused Sudhir Kumar Jain, accused Ved Prakash Agarwal and accused Vineet Godha for recording their specimen voice for the purpose of investigation of the case has been moved by CBI," the court said.
These accused, along with others, including Bhushan Steel Ltd Vice Chairman and Managing Director Neeraj Singal, are now in judicial custody till September 11.
They were arrested in connection with two separate graft cases in which CBI had booked them under the Prevention of Corruption Act and for the charge of criminal conspiracy under the IPC.
On August 2, CBI had arrested six accused in connection with the case and claimed to have recovered Rs 21 lakh in cash from Jain's residence besides gold worth Rs 1.68 crore and documents of fixed deposits of up to Rs 63 lakh.
