New Delhi, Sep 3 (TIWN) The drug connection in Sushant Singh Rajput's death case is just a tip of the iceberg.

Based on these leads, the NCB would launch a nationwide crackdown on cartels involved in drug trafficking in Mumbai and other key metros.

The entire operation to unearth big-time drug syndicates and cartels is being supervised by NCB chief Rakesh Asthana, a 1984 batch IPS officer, who earlier cracked one of the biggest international cocaine syndicates in India originating from Columbia, late last year.

Top sources in NCB said that electronic evidence gathered by the bureau during the interrogation of Abbas Lakhani and Karan Arora revealed that leading Bollywood personalities were not only supplied marijuana or buds, but high quality cocaine was also being pushed into the film industry.