New Delhi, July 3 -- Union home minister Amit Shah on Wednesday said the NCB (Narcotics Control Bureau) has busted a global drug cartel, arrested eight people and triggered crackdowns in the US and Australia against the ring that operates across four continents and 10 countries.

Operation Med Max by the NCB that began in New Delhi's Mandi House nearly a month and a half ago, led to one suspect in the US, the bust of illegal factories in Australia, an illegal call centre in Udupi, and the identification of a money launderer in the US as well as a UAE-based kingpin.

Explaining the investigation trail, a home ministry spokesperson said that on May 25, the agency's operations unit intercepted a car near Mandi House (Bengali Market) in Delhi...