This is either a motivated defector or an attempted infiltration:

South Korea’s military is scrutinizing how a presumed North Korean defector managed to get through a seaside drain and into the country early Tuesday, according to the Joint Chiefs of Staff.
The man, intercepted at 7:20 a.m. by South Korean troops inside the civilian control line just south of the Demilitarized Zone, apparently swam some part of the way from North Korea in a dive suit before passing through a drain south of the border, according to a translated, text-message update from the joint chiefs Wednesday.
“The person is assumed to have gone up a beach in the vicinity of the Unification Observatory,” south of an observation post, wearing the dive suit and fins, “and then passed through a drain under iron fences along the coast,” the message said.
The incident occurred in the northeastern Gangwon province, a joint chiefs spokesman said. The site description matches the Goseong Unification Observatory near the DMZ on South Korea’s eastern coast. Another defector crossed there in early November.
Stars & Stripes
You can read more at the link, but reportedly the South Korean military unit did not take appropriate action when security cameras spotted the defector.








