South korea 's yonhap news agency last month reported that north korea recently increased the number of people in a cyber warfare unit .
韩国联合通讯社（yonhapnewsagency）上月报导说，朝鲜最近增加了网络战部门的人力。
In south korea , the yonhap news agency quoted intelligence sources as saying the plane was a north korean mig fighter jet that crashed shortly after takeoff .
The yonhap news agency speculated the pilot may have been attempting to defect to russia .
韩联社猜测，飞机可能是想逃往俄罗斯。
Underscoring the unpredictability of the military situation , south korea 's yonhap news agency reported that north korea had fired a short-range missile into the sea of japan early monday .
South korea 's yonhap news agency reported that the fishing vessel , the 55 daeseung , was likely detained for entering north korea 's exclusive economic zone .
