North Korean soldiers fighting alongside Russia's army in the Kursk region appear to have suspended combat operations last month, South Korea's spy agency told AFP Tuesday, coming after Ukraine claimed the soldiers had been pulled from the front line after facing heavy losses.

North Korean soldiers previously fighting alongside Russia's army on the Kursk front line appear not to have been engaged in combat since mid-January, South Korea's spy agency told AFP on Tuesday, after Ukraine claimed they had been withdrawn following heavy losses.

South Korea’s military says it suspects North Korea is preparing to send additional troops to Russia after its soldiers already deployed on the Russian-Ukraine war fronts suffered heavy casualties

North Korean troops, largely special ops forces, have suffered high casualties in bloody assaults not unlike other units, including prison units.

A Ukrainian news outlet has published a video showing the capture of a North Korean soldier, as South Korea's spy agency said Kim Jong Un has pulled troops from Russia's Kursk region. Newsweek has contacted the Russia's Foreign Ministry for comment.