A 29-year-old man has died after what Jersey Police suspect to be a severe reaction to the drug, MDMA.
He was taken from an address in St Helier to intensive care, but died just before 2am yesterday morning.
A significant amount of cannabis and MDMA was found at the scene, which resulted in a 44-year-old woman and 28-year-old man being arrested on suspicion of possession with intent to supply. They are still in police custody.
Police say there's no direct link to the 'Skype' tablets that the Alcohol and Drugs Service warned about last week.
"If confirmed as being caused by MDMA, this man's death is a tragic reminder of the risks involved in taking these illegal substances. It's impossible to know what they contain or how your body will react.
"We are aware of extremely strong and dangerous forms of MDMA available in Jersey at this time and ask potential users to consider these risks before they put themselves in harm's way.
"For those who still choose to take these substances, we ask that you read the advice provided by the Alcohol and Drugs Service on reducing the risks." - Mark Hafey, Acting Chief Inspector.
A post-mortem examination will be carried out today.
Advice has been given to GP practices across Jersey about these types of drug reactions and Hospital Emergency Department staff are also aware.