Days after pull out N Korean officials make return to liaison office in Kaesong

North Korea has returned its staff to an inter-Korean liaison office, Seoul said Monday, just days after unilaterally withdrawing from the joint facility. "Some of the North Korean staff members are working at the South-North Joint Liaison Office starting from today," the unification ministry said in a statement.

The office in the Northern city of Kaesong was opened in September as the two Koreas knitted closer ties, but the North pulled its staff out last week without explanation.