A long way from his homeland, Neil Prakash is currently locked up in a maximum security Turkish prison near the Syrian border.
And if the Prime Minister has his way, the former Melbourne schoolboy turned alleged high-ranking IS operative, will be kept under lock and key for a long time to come.
"He is one of the most dangerous people in that region. He is a financier, a leader, a planner of terrorism."
Thought to have been killed in a US air strike last year, it turned out he was only injured and now the 25 year-old is wanted in countries around the globe over terrorism-related activities.
Malcolm Turnbull is pushing to get him back to Australia as soon as possible.
"The Turkish justice system obviously has to go through its process but he is wanted here and we will seek to extradite him when that's able to be done, back to Australia to face criminal charges here and pay the price for his crimes."
Under an arrest warrant issued by the Australian Federal Police, he faces life in jail for charges of fighting with terrorists in Syria and Iraq, being a member of an outlawed organisation and recruiting for a terror group.
Investigators have travelled to Turkey to speed up the extradition process and if Neil Prakash is returned to Australia, he is likely to face court in his birthplace, Melbourne.
Foreign affairs analyst Greg Barton says it sets the scene for potentially one of Australia's most significant international terrorism trials.
"We have never had such a potentially close-up account of someone who has been fighting with terrorist groups, who has been involved actively for years in recruiting like Prakash has, so this promises to be quite a groundbreaking trial and potentially a great help in preventing other young people from being recruited."
Greg Barton says it's important for Australian authorities to establish good relations with their Turkish counterparts, given many of the country's more seasoned counter-terrorism officials have been sidelined in the political fallout from last year's aborted coup.
"... because it's not just the case of Neil Prakash, there are likely to be a number of other Australians coming through the same route - being arrested crossing into Turkey - so it's very important to re-build that relationship with Turkish authorities."
The Prime Minister says there is no room for complacency when it comes to dealing with "dangerous radicalised terrorists."
"I can tell you very seriously and very gravely, Neil Prakash should never, ever be released from custody and I will do everything I can to ensure that he remains behind bars, full-stop."
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