the Telegraph reported North Korea has warned

the Telegraph reported North Korea has warned that any of its citizens caught trying to defect to China or using mobile phones during the 100-day mourning period for Kim Jong-il will be branded as "war criminals" and punished accordingly.
The Workers' Party has issued the stern warning in an effort to deter more from attempting the already perilous journey, apparently in an effort to ensure the stability of the new regime of Kim Jong-un, who took over from his father, according to Good Friends, a South Korean relief group.
People who are caught attempting to flee the poverty and political oppression in the North, as well as those detained in China and sent back over the border, usually end up in the North's network of hard labour camps, human rights groups have reported, while repeat offenders can expect to be executed.