Ukraine has urged the international criminal court to investigate footage circulating on social media that appeared to show Russian fighters killing a Ukrainian prisoner of war, reported the Guardian.

Graphic clip shows detained combatant standing in a shallow trench before being apparently shot.

In the graphic clip that first circulated on Telegram, a detained combatant is seen standing in a shallow trench and smoking a cigarette. The soldier says “Glory to Ukraine” and is then apparently shot with automatic weapons.

Late on Monday, Ukraine’s foreign minister, Dmytro Kuleba, wrote on Twitter that the “horrific” video was more “proof this war is genocidal”.

Kuleba added that it was “imperative” that international criminal court prosecutor Karim Khan “launches an immediate ICC investigation into this heinous war crime”.

“Perpetrators must face justice,” he said.

Ukraine’s human rights commissioner, Dmytro Lubinets, said that he had sent the video to the country’s “international partners”.

“Once again, they violate Geneva conventions. They will not evade responsibility for their atrocities,” Lubinets wrote.

Ukrainian president, Volodymyr Zelenskiy, appeared to condemn the alleged killing by posting a message on his Instagram account on Monday evening that read: “Glory to our Hero … Glory to Ukraine.”