A 29-year-old man has died after having a suspected reaction to MDMA.
Jersey Ambulance Service were called to an address in St Helier to treat the man in the early hours of Sunday 18 August.
The man was taken to the intensive care unit but died.
A significant quantity of cannabis resin and MDMA was later found at the address in St Helier.
This morning two people including a 44-year-old woman and a 28-year-old man were arrested on suspicion of possession with intent to supplyand they remain in police custody.
A post-mortem will be carried out today to determine if the death was caused by MDMA.
Police say that at this stage, there is no direct link to the Skype MDMA tablets that the Alcohol and Drugs Service warned about last week, but States of Jersey Police are keen to highlight the generic risks associated with illegal drugs.