North Korea appears to have blown up the liaison office with South Korea in the border city of Kaesong.
South Korean news agency Yonhap reported that based on information from military sources.
With this, Pyongyang takes a new step in severing ties with South Korea. North Korea had already announced that it would close the office.
Earlier, the country broke all lines of communication with the South, including a hotline between leader Kim Jong-un and South Korean President Moon Jae-in.
Pyongyang breaks ties because the South Korean authorities plan to carry out “hostile acts” against North Korea.
The communication channels and liaison office were established in 2018 after Kim and Moon held several summits within months.