Six so-called “narco subs” stuffed with cocaine were captured in a Colombian-led international anti-drug operation, authorities in the Latin American nation said Wednesday.

A massive global drug bust has led to the capture of six so-called "narco-subs" loaded with more than 200 metric tons of cocaine and the discovery of a new drug trafficking route to Australia. The six-week operation was led by Colombian authorities and involved 62 countries,