Sudan's military chief Abdel Fattah al-Burhan ordered the release of four civilian members of the ousted government of Abdalla Hamdok, state television said on Thursday.
The quartet were Hamza Baloul, Ali Jiddo, Hashim Hasabalrasoul and Yousef Adam, it added.
The United Nations has been coordinating efforts to find a way out of the country's political crisis following a coup by the military on Oct. 25 in which top civilian politicians were detained and Hamdok was placed under house arrest in the capital Khartoum.
The United States on Thursday called for the armed forces of Sudan to release all detained civilian leaders and protest organizers detained since the military takeover, State Department spokesperson Ned Price said.
The coup derailed a transition to civilian rule and led to a Western aid freeze.