The BBC is carrying a report from South Korean organization Good Friends that 15 people were shot on a bridge in the border town of Onseong, North Korea, two weeks ago either for trying to flee into China or helping others to do so. It is reported that the refugees were seeking aid from relatives in China. A Yonhap version of the story, via Naver, can be accessed here.
Onseong, in the northernmost point in North Korea , used to host the #12 Concentration Camp until 1987, when a large-scale riot erupted after an angry prisoner beat to death a security agent for inflicting extreme torture. Out of 15,000 prisoners, 5,000 were killed. The rest were transferred to Yodok.