North Korea has notified the United Nations Command (UNC) overseeing the implementation of the inter-Korean armistice that it resumed building barriers along the border last week after a break of several months, South Korea’s defense ministry confirmed on Monday.

During a regular press briefing, a ministry spokesperson told reporters that Pyongyang’s decision to inform the U.S.-led multinational force was “meaningful” but did not specify what the communique said.

Following South Korean media reports about the notification, the UNC told NK Newsthat it does not comment on specific details regarding the DPRK military’s message, but emphasized the importance of