North Korea has detonated a joint liaison office with the South on its soil near the border town of Gaeseong, according to South Korean officials.
The move comes just hours after North Korea renewed its threat to take military action against the South.
The site, which is located on North Korean territory, was opened in 2018 to help the two Koreas communicate.
The contact office has been empty since January due to restrictions imposed by Covid-19 disease.
Tensions have escalated between North and South Korea for weeks, and the reason was a group of dissidents who live in the south and are used to sending propaganda to the North.
The sister of North Korea’s leader, Kim Yu-jung, threatened to destroy the office in a statement released over the weekend, in a “tragic scene.”
The two countries established the office following talks between the North Korean leader, Kim Jong-un, and his southern counterpart, President Moon-ji-en.
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The Unification Ministry in Seoul, South Korea, confirmed an explosion at the liaison office at 02:49 local time.
“North Korea’s destruction of the liaison office is a symbolic blow to inter-Korean reconciliation and cooperation,” said Lev-Erik Easley, a professor at Iwha University in Seoul.
He added: “It is difficult to understand how such work can help the Kim regime achieve what it wants from the world, but these images will be used for propaganda internally.”
Analysts say Pyongyang may seek to fabricate a crisis to increase its influence as nuclear negotiations with the United States are frozen.
North and South Korea are still virtually at war, as the two countries did not reach any peace agreement between them, when the war ceased in 1953.