"Recently, the North Korean military has been erecting walls, digging up land and constructing roads in some areas between the Military Demarcation Line (MDL) and the northern demarcation line in the DMZ," the source said.
The source said it was unclear whether these activities signaled an intention to build a long wall north of the MDL or merely establish defensive structures at specific points, Yonhap news agency reported.
Earlier this week, about 20 North Korean soldiers briefly crossed the inter-Korea border before retreating back to the North after the South's military fired warning shots amid heightened tensions over Pyongyang's garbage-carrying balloon campaign. The land had crossed the border.
Military observers speculate that the incident may be related to northern wall construction. At the time of the border incursion, North Korean soldiers were carrying work tools such as picks and shovels.
The border crossing came amid heightened cross-border tensions due to North Korea's recent garbage-carrying balloon campaign.
The MDL horizontally bisects the DMZ, acting as a buffer zone between the two Koreas since the 1950–53 Korean War ended in an armistice rather than a peace treaty.
The source said it was unclear whether these activities signaled an intention to build a long wall north of the MDL or merely establish defensive structures at specific points, Yonhap news agency reported.
Earlier this week, about 20 North Korean soldiers briefly crossed the inter-Korea border before retreating back to the North after the South's military fired warning shots amid heightened tensions over Pyongyang's garbage-carrying balloon campaign. The land had crossed the border.
Military observers speculate that the incident may be related to northern wall construction. At the time of the border incursion, North Korean soldiers were carrying work tools such as picks and shovels.
The border crossing came amid heightened cross-border tensions due to North Korea's recent garbage-carrying balloon campaign.
The MDL horizontally bisects the DMZ, acting as a buffer zone between the two Koreas since the 1950–53 Korean War ended in an armistice rather than a peace treaty.
