A man in Queensland has died and another is critically ill after suspected poisoning from a batch of synthetic cannabis.
The 33-year-old man died on Tuesday, while the 41-year-old man is fighting for his life in a hospital.
Both incidents occurred in Mackay, in central Queensland, where police say there have been a spate of recent hospitalisations from the drug.
Detective Acting Inspector Sam Bliss, from Mackay Crime and Support Services, said the drug wasn't legal despite its availability over the internet and in suburban shops.
"The chemical compounds found in these drugs are dangerous and are not herbal or natural alternatives to 'real drugs'," he said.