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

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.

Oscar Jenkins went missing on Dec. 16 in 2024 while on a combat mission near the village of Mykolaivka in Luhansk Oblast.

Australian officials believe Australian soldier Oscar Jenkins, who travelled to fight in defence of Ukraine, is alive and in Russian captivity, rather than dead as had been feared.

Oscar Jenkins, once feared dead, is believed to be alive and in Russian captivity. Foreign Minister Penny Wong has called for his release and warned Moscow the federal government's response will be "unequivocal" if he is not treated humanely.

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.

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.