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.

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

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.

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.

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.

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.