North Korean soldiers sent to fight for Russia in Ukraine were deceived into thinking they were battling South Korean forces, the Wall Street Journal has reported. Testimonies from two captured soldiers,

North Korea allegedly provided more troops to Russia for support in their war in Ukraine, according to South Korea’s spy agency. South Korea’s National Intelligence Service announced it detected new troop movements from North Korea but did not specify how many troops have been deployed to Russia recently.

South Korea’s spy agency says North Korea appears to have sent additional troops to Russia, after its soldiers deployed on the Russian-Ukraine fronts suffered heavy casualties.