The Director of Nationality, Passport and Immigration calls on foreigners and South Sudanese travellers not to escape at checkpoints.
Anisa Radio quoted Colonel Moses Ebini Manga saying anyone who crosses to Gbudue State or going outside must use the right procedures specially screening for verification of the Ebola virus.
The director appeals to citizens to cooperate with the immigration and passport departments.
Moses says foreigners whose document has expired should renew peacefully before the government take legal measures against them.