Omar Khadr's incarceration in Canada will force the government for the first time to attempt rehabilitating an alleged violent political extremist.

Khadr, 26, returned to Canada Saturday after spending 10 years in the United States military prison at Guantanamo Bay, Cuba.

Now that he is in Canada, Khadr's imprisonment, and the continuation of any rehabilitation begun while in US custody, will be the responsibility of Correctional Service of Canada.

Khadr has served two years of an eight-year prison sentence.

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It is likely Khadr had any de-radicalization treatment in Guantanamo Bay, said Christian Leuprecht, an associate professor of political science at Royal Military College and Queen's University.

The Canadian prison system is built around the principle of rehabilitating inmates with the ultimate goal of re-introducing them back into society.

Under Canadian law, he could be eligible for parole as early as next summer.

"That will be the interesting litmus test over the next few months," Leuprecht said.

"A year is a good amount of time to observe someone's behaviour and interactions."

Leuprecht said Khadr's rehabilitation could benefit from being away from other radical political prisoners.

The prof said he did not know under what circumstances Khadr was being held.

The Canadian prison system will likely be a lot different from the military prison Khadr was transferred from, said Catherine Latimer, executive director of the John Howard Society.

Khadr is likely to be among more inmates, Latimer said, but could also be isolated and in protective custody, something reserved for imprisoned police officers, child sex offenders, prison informants and others who may be at targeted by other inmates.

But Latimer said Khadr may not be at risk.

"It's not desirable to go into protective custody if you don't have to," she said.

Millhaven may not be Khadr's final destination in the prison system either, Latimer said.

Millhaven houses an intake and reception facility where new inmates go through a series of psychological tests to determine what level of security Khadr is housed under, Latimer explained.

The results of those tests could determine where Khadr will serve the remainder of his sentence, she said.