Australia has vowed it will take the “strongest action possible” if Russia has harmed one of its nationals captured fighting for Ukraine, after reports emerged the prisoner of war may have been killed.

Australia's Prime Minister Anthony Albanese responded on Wednesday to the alleged death of Oscar Jenkins, a Melbourne man captured while fighting for Ukraine, swearing to take 'the strongest action

Australian Prime Minister Anthony Albanese promised the "strongest action possible" if reports of an Australian national being executed by Russian forces while fighting for Ukraine are verified, CNN reports.