An elderly Australian couple were given a surprise after AU$10 million (NZ$10.6 million) worth of crystal meth was wrongly delivered to their house on Wednesday.
After signing for the package, they found it contained a number of bags of white powder, AAP reports.
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Police allege the package had about 20 kilograms of methylamphetamine inside it.
Another 20kg of the drug was then found by police when a search warrant was executed at a seperate Melbourne address, AAP reports.
Police are speaking to a 21-year-old man for allegedly trafficking and importing drugs.
According to narconon.org, crystal meth - also known as ice - is one of the most destructive drugs on the illicit market.
"If someone you care about is abusing it, it is critically important to help them find effective help as soon as possible," the website advises.
"Ice is a strong stimulant, a highly purified form of methamphetamine that can be and usually is smoked. It causes a person to be energetic, artificially confident and euphoric."
A National Drug Strategy Household Survey in 2017 suggested people in rural Australia used the drug more, reports ABC.