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.

Oscar Jenkins, an Australian teacher fighting for Ukraine, was reportedly captured and interrogated by Russian soldiers. His status and whereabouts are unknown.

The government is considering diplomatic retaliation if reports that Melbourne man Oscar Jenkins has been killed in Ukraine by Russian forces are confirmed.

Australia summoned the Russian ambassador over reports a Melbourne man had been killed after being captured by Russia while fighting for Ukraine, Prime Minister Anthony Albanese said on Wednesday.

Oscar Jenkins, a former school teacher from Melbourne, was seen being struck by a Russian interrogator in a video posted in December.

Australia said Wednesday that "all options are open" in its response to the reported killing of one of its citizens after his capture by Russian forces in Ukraine.

Australia has summoned Russia’s ambassador to the country over reports that a Melbourne man was killed after being captured while fighting for Ukraine. Anthony Albanese said on Wednesday that his government was “gravely concerned” about Oscar Jenkins,

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 broadcaster ABC and CNN’s affiliate Seven News cited Ukrainian sources suggesting that the 32-year-old soldier might have been killed. Speaking at a press conference on Jan. 15, Albanese said his government is “urgently seeking clarification” about the situation,