A mother and son have been arrested after Australia's fifth-largest drug seizure.
The Australian Federal Police (AFP) say 168kg of heroin - with a potential street value of more than $400 million - was discovered in Sydney in a shipping container sent from Malaysia.
A 55-year-old Campsie woman and her 28-year-old son have been arrested along with a 33-year-old Hong Kong national.
The mother is due to appear at Sydney's Central Local Court on Monday.
AFP Commander David Stewart said the heroin was found in a container of wooden doors.
"This importation is the fifth largest in Australian history and has saved the community $48.7 million in associated health and social costs," he told reporters.
Once the heroin had been cut, it would be worth upwards of $410 million on the street, he said.The drug was discovered by Customs and Border Protection Officers who x-rayed 295 doors and found 24 packages of white powder inside the cavities of nine of them.