Claiming that the investigation was compromised by the SIT, which was formed by the high court and is being monitored by it, as the DGP consulted a state advocate prior to submitting the charge sheet before a trial court, the counsels prayed before Justice Harish Tandon that a fresh probe be held by an independent agency.
Ghosh's counsel Phiroze Edulji submitted that the DGP, who was heading the SIT, had violated a Supreme Court order by sharing the details of confidential reports with the state advocate that were placed before the court on its direction.
The matter was adjourned till Thursday for hearing.
State DGP G M P Reddy had last week appeared before the high court on its direction and explained why the charge sheet in the case had been filed without taking its leave.
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Reddy told the court that the charge sheet had been filed by the SIT in the Parui murder case without taking leave of the court as per the legal advice given by a state counsel.
Sagar Ghosh, a former Trinamool Congress member, had fought and won as an Independent in the 2013 panchayat elections after allegedly being denied a ticket by his party.