Euthanasia campaigner Philip Nitschke has not been able to retrieve items seized from him by South Australian police after a cancer sufferer took his own life in 2014.
Dr Nitchschke has visited the SA police headquarters to demand they return the phone, computers, monitors, documents and vials taken from him as part of an investigation into the death of terminally ill Max Bromson.
He says police told him on Tuesday he would need to contact the detective involved in the case.
He told AAP he had no idea how long it would now take to get his property returned.
Mr Bromson, a Voluntary Euthanasia Party senate candidate, ended his life in Glenelg in July 2014 surrounded by family members after taking a lethal dose of an imported barbiturate.
He had said he was living with chronic pain and wanted the right to end his life peacefully at the appropriate time.
Dr Nitschke was questioned by police over the death, after saying the 66-year old used a drug that had been tested at the Adelaide laboratory of Exit International, a pro-euthanasia organisation.
SA police said in a statement in August they had completed their investigation into Mr Bromson's death and would not be laying any charges.
Dr Nitschke, who now lives in the Netherlands, returned to Adelaide this week to run a euthanasia workshop for the elderly and said South Australia would most likely be the first state with euthanasia laws.
"It seems to me that there will be legislation in Australia in the not too distant future," he told AAP.
"I've been saying that for 20 years, so it may seem silly, but you do get the feeling that there is going to be a change."
Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or the Suicide Call Back Service on 1300 659 467.
