The Central Bureau of Investigation has also arrested four IT officers, besides the then principal commissioner, Ranchi, in connection with the case, it said today.
On July 10, the central probe agency had registered an FIR against several IT officers in Ranchi, including the principal commissioner, on charges of criminal conspiracy, accepting illegal gratification, criminal misconduct etc.
The principal commissioner, Tapas Kumar Dutt, was arrested by the central probe agency on July 12.
He added that a chargesheet was filed in a special court at Ranchi today against Dutt, Lal, Gupta, Roy, Pal and nine others under charges of criminal conspiracy and provisions of the Prevention of Corruption Act.
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The officers, in connivance with the principal commissioner, were allegedly providing undue favours to businessmen, who were slapped with a heavy tax liability, in return for huge bribes, the CBI spokesperson said.
"Rs 3.7 crore (approx.) in cash, 6.6 kg (approx.) of gold and some incriminating documents, including one related to a flat worth Rs four crore (approx.), were recovered during the raids of the premises and a locker of the principal commissioner," the CBI spokesperson said.