According to the U.S. Customs and Border Protection, with a joint collaborative effort between Australian and U.S. authorities, a seizure of a mixed narcotic load of meth, cocaine and heroin weighing in at more than 1.7 tons concealed within a shipment of loud speakers was obtained.
The drugs were hidden in metal boxes and falsely labelled as loudspeakers.
The three containers seized Thursday also contained 55.9 pounds of cocaine and 11.5 pounds of heroin and had a street value of $1.29 billion.
It's not only the largest ever seizure of methylamphetamine bound for Australia, it's also a record domestic seizure of the drug in the USA.
Australian Federal Police (AFP) say they were found with "hundreds of thousands of dollars of proceeds of crime" during a raid in Melbourne.
Joseph Macias, special agent-in-charge for Homeland Security Investigations (HSI) Los Angeles, said: 'There's no question that the criminal organization behind this scheme has been dealt a significant blow.
"The Australian public who are consuming ice and other illicit drugs are assisting organised crime to flourish", Mr Hill added.
The shipment was bound for Australia.
As part of their investigation, the Australian Federal Police and police in the southern state of Victoria arrested six people, including an American couple living in the Melbourne suburb of Woodstock.
"This historic seizure highlights just how important the U.S". We now believe that Mexican cartels are actively targeting Australia. "We have averted a tsunami of ice to Australia", Assistant Commissioner Hill said.
"They have been sending smaller amounts over the years, this is now flagging their intent".
"They are one of the major and most powerful organised crime cartels now operating", Mr Hill said.
Colombian and Mexican cartels have long looked to local partners to open new markets for their produce and shift legal risk.
The Echo Task Force then continued to investigate the drug possession, and following this, police began to investigate the possible involvement of Australian gangs, which lead police to the discovery of the drugs and the arrests.
Three of those arrested in Australia will appear at Melbourne Magistrates Court later on Friday. The suspect was linked to organised crime with outlaw motorcycle gangs.