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, a 32-year-old teacher, who was captured by Russian forces last year.

Melbourne private school teacher Oscar Jenkins went to fight for Ukraine last year before being snatched by Russian soldiers.

Soldiers who served alongside Oscar Jenkins in the Ukrainian armed forces say they are convinced their Australian comrade was killed by Russia's military shortly after being captured last year.

Herald has revealed Australian Oscar Jenkins, who was taken captive by Russian forces in the Donbas region of Ukraine last month, was tortured “for days” before he was 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 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 pledged to take the "strongest action possible" if Russia is found to have deliberately harmed one of its citizens who was fighting alongside Ukrainian forces. Oscar Jenkins was captured last month by Russian troops,

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

The Russians may have killed Australian citizen Oscar Jenkins, who fought for Ukraine. Australia promises to "take the strongest action possible" if this information is confirmed, Reuters reports, citing Australian Prime Minister Anthony Albanese.