The CID on Saturday filed a supplementary chargesheet against BJP national vice-president Mukul Roy before the Ranaghat additional chief judicial magistrate, accusing Roy of conspiracy and murder of Trinamul’s Krishnaganj MLA Satyajit Biswas. Biswas was shot dead near his home on February 9 last year.

Roy’s lawyers termed the chargesheet “illegal” as the additional district and sessions judge had earlier issued curbs on any fresh investigation against him. Roy was questioned by the CID in March. Calcutta High Court granted Roy anticipatory bail.

In September, the CID also filed a similar chargesheet against BJP’s Ranaghat MP Jagannath Sarkar in the case. Five persons, including Roy, were named in the FIR lodged by Trinamul activist Milan Ghosh.

On May 8 last year, the CID filed the first chargesheet with no charges levelled against Roy and Sarkar. Based on it, the additional chief judicial magistrate, Ranaghat, on June 14 discharged them of allegations, which prompted the complainant to file a revision application for further investigation to examine their role.

On December 16, the ADSJ set aside the ACJM’s order and allowed a partial investigation restricting any fresh probe against the BJP leaders.

Members of the BJP’s legal team alleged that despite the categorical curbs on any further investigation, the CID continued the probe to implicate its party leaders.

“While setting aside the ACJM’s order (discharging the allegation), the ADSJ categorically restricted the scope of further investigation in the wake of the revision application. But the CID purposefully ignored it, violating the court order. We will move high court to quash this illegal chargesheet,” said Roy’s counsel Suman Roy.

Roy said: “I am not bothered since I have absolute faith in the judiciary.”