Russia might continue detaining an Australian man to carry out a high-profile prisoner swap in the future, an expert says.

Australia is calling for the just treatment and release of Oscar Jenkins who Russia confirmed is being held as a prisoner of war after fighting for Ukraine.

The Australian government has been told by Moscow that one of its citizens in Russian captivity is still alive. Oscar Jenkins, a 32-year-old teacher, was captured last year while fighting for Ukraine.

Australia says Russia has confirmed that national Oscar Jenkins is alive. Australian Prime Minister Anthony Albanese had warned of severe consequences if reports he was killed after capture turned out to be true.

Australian foreign fighter Oscar Jenkins, who was believed to have been killed by Russian forces after his capture, may still be alive.

Australian Prime Minister Anthony Albanese said Wednesday Russia has reported Oscar Jenkins is alive and in custody. The Australian man went to Ukraine to fight against Russia's invasion and was feared dead.

An Australian volunteer soldier fighting for Ukraine who was reported to have been executed by Russian forces after being taken prisoner is alive, Australian Foreign Minister Penny Wong said on Jan. 29.

Australian Oscar Jenkins is alive as a prisoner of war in Russian territory and his welfare is "normal", according to Russia's ambassador after execution fears.

Government officials believe an Australian soldier reportedly held captive in Russia is alive after initial fears he was killed.