MUMBAI, July 28 -- The Mumbai unit of the Narcotics Control Bureau (NCB), with the help of the Raigad police, recently busted an illegal, clandestine Ketamine manufacturing laboratory, operating inside the closed factory premises of a defunct private chemical firm at Mahad in Raigad. The search led to the seizure of 34 kg of powdered Ketamine and 12 litres of liquid Ketamine, along with a stock of precursor chemicals and lab equipment, NCB officials said on Sunday. The operation in Raigad was conducted based on leads procured from a joint operation by NCB and the Rajasthan police operation in Barmer, Rajasthan, on July 22 and 23. The officials discovered a mephedrone (MD)-making facility in a buffalo barn in the Dholakia village, allegedly being run by an inter-state syndicate that specialises in synthetic drugs, said officials. Two alleged members of the group were detained, and their interrogation revealed the involvement of other associates, including a Raigad resident. The Raigad police promptly detained one suspect, who told the police he used to work in Mahad in a private chemical factory that is now closed. The search of the closed factory premises led to the recovery of Ketamine, the officials said. The shut premises were being used to run the Ketamine-manufacturing lab. Investigation has further revealed the involvement of the mastermind who was earlier involved in drug trafficking cases of the NCB and the Directorate of Revenue Intelligence," a NCB official said. To arrest the trend of manufacturing of synthetic drugs in clandestine facilities, the NCB has shared "red flag indicators" for identification of such potential facilities with the heads of state police forces across the country, the official said. The NCB had earlier busted a clandestine lab manufacturing Mephedrone in Sri Ganganagar, Rajasthan, in which five kilograms of MD with precursor chemicals were recovered, and the accused, including a few science teachers were arrested....