South Korea’s spy agency said Friday a wounded North Korean soldier who was captured while fighting for Russia against Ukrainian forces has since died from his injuries, the Yonhap news agency reported.

Volodymyr Zelenskyy said earlier this month that Russia was trying to "conceal losses" of North Korean troops fighting against Ukraine.

Ukrainian forces have reportedly captured a North Korean soldier in the Kursk region, marking the first such incident since the onset of the conflict. However, South Korean intelligence suggests that the soldier has died.