It was quoted by Yonhap Infomax

It was quoted by Yonhap Infomax, 27th Korea Government sources, North Korean Navy patrol boat has significantly strengthened patrols along the coast, inspecting smaller vessels, designed to prevent the recurrence of residents fled from the sea. In Western waters regulation common tasks such as illegal fishing near the northern boundary the old republic power leveling, you temporarily stop. Korea Government sources also said that since last monthAfter 21 North Koreans have fled by boat, North Korea's coast guard and army units were ordered to step up vigilance, a big increase in the amount of communication between the various forces. Phoenix TV Roundup