Wellington Police have now received the pathologist findings regarding the death of Sofia ATHANASSIOU.
Detective Senior Sergeant Donna Howard says "The toxicology results have not provided us with any further insight and are inconclusive.
"These results, along with the initial post-mortem, haven't provided any conclusive evidence and the pathologist has concluded that the cause of death is 'undetermined'.
"The matter will now be referred to the coroner", said Detective Senior Sergeant Howard.
ENDS