The Narcotics Control Bureau (NCB) has submitted to the Bombay High Court that there were serious and grave allegations of irregularities against its former zonal director Sameer Wankhede and hence a preliminary inquiry was initiated against him.

The agency filed its affidavit last week in response to Wankhede’s petition challenging the notices issued to him on the NCB’s preliminary inquiry over irregularities in a drugs case related to actor Sushant Singh Rajput’s death.