Australian Federal Police and Customs officers have made what they say is the largest seizure of the drug ice in Australia's history.
NSW Police were also involved in the investigation, which authorities say led to 585 kilograms of ice valued at $438 million being taken off the streets.
A taskforce comprising officers from the AFP, Customs, New South Wales Police and the Australian Crime Commission jointly took responsibility for the operation.
Police revealed in a press conference this morning that three men - a 32-year-old from Singapore, a 51-year-old from Hong Kong and a 21-year-old from Canley Vale in Sydney - had been arrested and charged with attempting to possess a commercial quantity of methamphetamine.
The maximum sentence is life in prison.
Police say the operation began in September last year following a tip-off from a member of the public.
They say their investigations led to a "suspicious facility" at West Ryde in Sydney, where the arrivals of "suspicious containers" were monitored over a period of time.
The drugs were discovered in a chemical shipment from Shenjing in southern China on February 22.
Police say the three accused were then arrested while allegedly trying to collect the drugs.
NSW Police Commissioner Andrew Scipione hailed the work of the taskforce in seizing the haul, which is nearly twice the previous record haul of methamphetamine in Australia.
The previous largest haul was 300kg in July last year.
"When the police and the community work together, these are the sort of results you get," he said.
"We're very fortunate that somebody took the time to make that phone call.
"Make no mistake. This is a hideous insidious drug.
"This is the sort of drug that sends people mad."
The three men will appear in Sydney Local Court this morning.
