Sudan's army said on Sunday it had seized back control of the town of el-Gitaina, just south of the capital, from the Rapid Support Forces (RSF) and broken the paramilitary group's siege on the strategic city of el-Obeid to the west.

Sudan’s paramilitary Rapid Support Forces and allies have signed a charter that paved the way for the establishment of a parallel government, as Sudan’s army made advances recently against the rival groups.

Activists said three days of attacks by the paramilitary group had killed more than 200 people in White Nile state, which has emerged as a key battleground as the army regains territory.

Sudan's Rapid Support Forces signed a charter with allied political and armed groups late on Saturday to establish a "government of peace and unity", signatories al-Hadi Idris and Ibrahim al-Mirghani told Reuters.

Sudan's army and allied groups could face formidable battlefield challenges if the recent political agreement between the paramilitary Rapid Support Forces (RSF) and a powerful faction of a southern rebel group becomes a military alliance,