On 4 February, Morris Mabior Awikjok Bak, a South Sudanese critic, was reportedly arbitrarily arrested, allegedly by armed Kenyan security forces and a South Sudanese man in civilian dress in Nairobi, Kenya where he resides. It is believed he was forcefully returned to Juba, South Sudan and is being held in incommunicado detention at a National Security Service detention facility. The South Sudanese authorities must clarify and reveal Morris Mabior Awikjok Bak’s fate and whereabouts, ensure he has regular access to his family, a lawyer and a doctor, and unless he is charged with an internationally recognisable offence, immediately release him.