Australian police have seized drugs worth over half a billion dollars and broken up a Hong Kong-based drugs ring.
Four Hong Kong nationals and three Australian residents were also arrested in raids in Sydney yesterday.
Over half a tonne of drugs, including 306kg of crystal methamphetamine - also known as ''ice'' - and 252kg of heroin, were seized.
The drugs are estimated to be worth $500 million.
The raids and arrests followed a year-long investigation.