New Delhi, April 28 -- The Narcotics Control Bureau (NCB) and the Gujarat Anti-Terrorist Squad (ATS) in a joint operation Operation Prayogshala, busted three secret drug production facilities in Gujarat and Rajasthan on Saturday, media reports said.

Drugs valued at around Rs 300 crore were confiscated during the operation.The NCB said seven people linked with the drug syndicate have been detained, and the mastermind has been identified, with plans for imminent arrest, reported Indian Express.

The NCB said raids are also underway at a fourth site in Amreli, Gujarat, according to the report

In the overnight operation, police confiscated 149 kg of mephedrone in both powder and liquid forms, as well as 50 kg of Ephedrine and 200 liters of ...