Two Canadians are among seven men facing charges in Australia related to an alleged drug-trafficking scheme.

Australian police said last July, officers found 280 kilograms of liquid methamphetamine in an industrial cooler near Sydney that had been imported from Vancouver, B.C. Two men were arrested the following month after police observed two people accessing the cooler and preparing to extract the meth.

Police say they continued to investigate a 42-year-old man they allege was behind the scheme to use a freight forwarding company to import the meth, as well as millions of illegal cigarettes from the United Arab Emirates.

They allege the man last month enlisted two men who flew to Australia from Canada to help distribute 50 kilograms of cocaine to organized crime groups in New South Wales. Police say the cocaine was brought into the country from Panama, hidden in cement bags.

Four men were arrested on May 30 in relation to the probe, including two Canadians, aged 24 and 31. Both were charged early this month with drug trafficking and other criminal charges.

Police say a 36-year-old man was also arrested on May 31 at Sydney Airport related to the alleged scheme.