The CBI sought an extension of the remand for former RG Kar Hospital principal Sandip Ghosh and former Tala police station officer-in-charge Abhijit Mondal, citing evidence tampering and the need to explore all possibilities. Both accused had been in the CBI custody for three days and were produced before the court, which extended their remand until September 20. During the hearing on Tuesday, the CBI lawyer stated that Sandip Ghosh and Abhijit Mondol are subjected to further investigation regarding call recording, DVR, CCTV cameras, and other data related to the case and that custodial interrogation was required in this case.