Kim Jong Un apologizes in letter to Seoul for shooting of South Korean official
https://edition.cnn.com/2020/09/25/asia/north-korea-south-korea-shooting-intl-hnk/index.html
It's rare to see apology between both Koreas, though we used to see intense conflicts like speaking ill of Southern leader.
But, almost all of the good political trends in this peninsula are deteriorated by North Korean leaders. So, we have to see this accident carefully.