INX Media case: CBI to inspect documents received from Switzerland Special Judge M K Nagpal also permitted the agency to prepare a working copy of the data stored in the data carrier in encrypted form, so that it can be used for the day to day investigation of the case PTI | February 9, 2021 | Updated 00:30 IST former union minister P Chidambaram A Delhi court Monday allowed the CBI to investigate certain documents received from the Switzerland authorities in execution of Letter Rogatory (LR) in relation to INX Media corruption case allegedly involving former union minister P Chidambaram. Special Judge M K Nagpal also permitted the agency to prepare a working copy of the data stored in the data carrier in encrypted form, so that it can be used for the day to day investigation of the case.