Nine young backpackers were rushed to hospital in the west Australian city of Perth after snorting a drug they mistook for cocaine.
Three remain in critical condition after ingesting the mystery white powder which arrived in the post addressed to someone else.
The nine suffered seizures, paralysis and hallucinations.
Tests suggest the powder contained Hyoscine, a prescription drug which has gained notoriety as a date rape drug.
What do we know?
The backpackers, aged between 21 and 25, were staying at a property in the city’s Victoria Park district when a package arrived in the post addressed to a previous occupant, one of the victims told the West Australian newspaper..
They decided to open the package and found a white powder inside, wrapped in a piece of paper bearing the word “scoop”, said the man, who said his first name was Simone.
“Scoop” may have been a reference to “scopolamine”, another name for Hyoscine.
Believing the powder to be cocaine, they divided it into nine doses and snorted it up their noses – only to quickly become paralysed and unable to summon help.
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“We were powerless, we couldn’t do anything,” Simone said. The alarm was only raised when another housemate, who had been out for the evening, returned home.
Neighbours spoke of their terror as they watched the housemates being taken out of the house on stretchers, some unconscious and some suffering glassy-eyed seizures.
What condition are the backpackers in?
Three – two French and one German – remain on full life support in intensive care, said Royal Perth Hospital emergency doctor David McCutcheon.
“Several of these people would have died I’m pretty sure without medical intervention,” he told the West Australian, adding that the nine were brought to hospital “in a state of agitated delirium”.
“They were hallucinating, their hearts were racing, several of them had to be put in a medically induced coma for their own protection and I really need to emphasise how seriously unwell they were.”
Acting deputy police commissioner Gary Budge said the incident flagged up the serious risks to health posed by taking unknown substances, be they illicit or prescription drugs.
What is Hyoscine?
It is used in small doses in over-the-counter medications to treat travel sickness and gastro-intestinal pain.
But in larger doses the drug can cause paralysis and, as such, it has been used by criminals to carry out robberies or sexual offences.
Cocaine is illegal in Australia, with federal and state laws providing penalties for possessing, using, making or selling the drug.