Several North Korean officials returned to the inter-Korean liaison office at the Kaesong Industrial Complex (KIC) on Monday morning to work, the ROK Ministry of Unification (MOU) said, in a surprise move that comes just three days after Pyongyang abruptly withdrew staff from the facility.

"Some of the North Korean staff members are working at the South-North Joint Liaison Office starting from today 8:10 A.M.," an MOU official who wished to remain anonymous told media.