NCB to soon file chargesheet in Sushant Singh Rajput drug case The Narcotics Control Bureau (NCB) probing the Sushant Singh Rajput drug case is finalising the chargesheet to be filed in the case. advertisement Sushant Singh Rajput The Narcotics Control Bureau (NCB) probing the Sushant Singh Rajput drug case is finalising the chargesheet to be filed in the case. The NCB has around 180 days to file the chargesheet under NDPS (Narcotic Drugs and Psychotropic Substances) Act. Sources from the agency said that they were in final stages of filing the first chargesheet which would include the initially arrested accused mostly those arrested in the month of September and October last year in the case. The remaining others arrested later would be named in the supplementary chargesheet.