South Korea's spy agency said Friday it had confirmed that a North Korean soldier sent to back Russia's war against Ukraine had been captured by Ukrainian forces.

Ukrainian forces have captured an injured North Korean soldier who was sent to support Russia's war, South Korea's spy agency confirmed Friday. The soldier is believed to be the first North Korean prisoner of war captured since December, when Pyongyang deployed forces to support Russia's war in Ukraine.

Seoul's Joint Chiefs of Staff (JCS) also said Monday that more than 1,000 North Korean soldiers have been killed or wounded.