Mirtha Susan Ramos Mazuela has pleaded guilty to a slew of drug charges at the High Court in Auckland, Stuff reports. The Chilean woman admitted that she is part of an international drug syndicate which is responsible for importing more than a tonne of drugs such methamphetamine, MDMA, cocaine and ephedrine, worth up to $5 million to New Zealand. She was arrested, alongside her son, Hugo Alarcon Ramos, as part of an eight-month police operation called Operation Mystic.