The Mumbai-zonal unit of the Narcotics Control Bureau (NCB) has busted an inter-state drug cartel and seized 3,000 bottles of codeine-based cough syrup estimated to cost Rs 15 lakh after arresting three persons, an official said on Sunday.

In an official statement, the NCB said that consequent upon the active intelligence and diligent efforts to crackdown the misuse of CBCS in Mumbai areas,  NCB Mumbai had mounted surveillance near Ulhasnagar Thane. Reportedly the involved interstate traffickers are using different transport services for illegal trafficking of CBCS by misdeclaring the transported goods.