North Korea’s young leader Kim Jong-un appears to have ordered a realignment of some military units, and South Korea’s military is closely watching the North’s move, a Seoul government source said Friday.

South Korean intelligence authorities have judged that the North’s recent forward deployment of attack helicopters near the tense Yellow Sea border with the South was part of the realignment, the source said.

“Intelligence authorities detected circumstances that the North Korean military is realigning some of its units, including air and artillery forces,” the source said on the condition of anonymity.

Last month, South Korean military officials said the North has deployed about 50 attack helicopters such as the upgraded Mi-2 and Mi-4 models to the Taetan and Nuchon air bases near the Yellow Sea border. (Yonhap News)