South Sudan security forces seized copies of a newspaper to quash a story quoting rebel claims that they would attack the southern capital.
Communist party newspaper Al-Maidan and Ajras al-Hurriya claim authorities have been blocking their distribution since Wednesday.
Sudanese journalist, Amal Habani, is jailed for reporting on an alleged rape. The imprisonment is another example of reporters being punished for similar offences.
Press freedoms are tightened in the wake of South Sudan's secession
In 2011, many newspapers in Sudan were closed or suspended and many journalists were detained, tortured, or subject to judicial investigations.
Alwan is the second daily to be shuttered by the Sudanese government in less than a month.
اقدمت السلطات السودانية على إغلاق صحيفة الوان المستقلة ومصادرة ممتلكاتها.
صحيفة الجريدة تجسد معاناة الاعلام السوداني الذي يخضع لرقابة خانقة ويعاني من المصادرة والاغلاق المستمر للصحف.
Following a three month ban, one of Sudan's daily newspapers has come to blows once again with censorship.
صادرت عناصر الأمن السوداني عدد يوم الإثنين من صحيفة "التيار" السودانية من دون إصدار أي مبررات.