A joint operation between Hong Kong and US authorities has led to the city's biggest seizure of cocaine.
Some 649kg of the drug, with an estimated street value of HK$760 million, was discovered in a shipping container that arrived from Ecuador on Wednesday, following a tip-off from the US Drug Enforcement Administration.
It eclipsed the previous record haul by more than 80kg.
Three local men have been arrested and customs believes it has smashed a syndicate which transports the drug from South America.
The haul was worth about HK$15 million in the underground wholesale market in South America, but could fetch HK$760 million in the city, one senior official said.
The container was on a list of shipments considered suspicious by US authorities and referred to Hong Kong customs as part of a joint operation codenamed 'Surfing Coke'.