In a statement, the Sudan People’s Liberation Movement/North (SPLM-N) said it had released captives and them over to the International Committee of the Red Cross (ICRC).
“We have handed over more than 130 war prisoners to the ICRC,” SPLM-N said in the statement.
“They have been transported today through some special corridors to Uganda through South Sudan and they will be handed over to Sudan,” a part of the statement read.
SPLM-N has waged an active insurgency against the Khartoum government in Sudan's southern Blue Nile and South Kordofan states since 2011.
Outlawed rebel movement consists mainly of fighters who sided with the south during Sudan's decades-long civil war.
Twelve rounds of peace talks have failed to achieve any breakthrough between the government and SPLM-N.