Sudan is in the middle of a violent power struggle. This paramilitary group is at the centre of it

Clashes between the Sudanese military and the paramilitary Rapid Support Forces (RSF) group involved exchanges ofgunfire in Khartoum and other parts of the country on Saturday, in an apparent struggle for control.

The army rejected assertions by the RSFthat they had seized the presidential palace, the army chief's residence and airports in Khartoum and the northern city of Merowe.

With conflicting versions of events given by the two sides, the situation on the ground was unclear.

The RSF said the army had attacked it first;the army said it was fighting the RSF at sites the paramilitary groupsaid ittaken.

The RSF is commanded by Gen.Mohamed Hamdan Dagalo, who currently holds the position of deputy head of Sudan's ruling Sovereign Council and is commonly known as Hemedti.

Analysts estimate the force numbers about 100,000, with bases and deployments across the country.

Evolution of RSF

The RSFevolved from so-called Janjaweed militias that fought in a conflict in the 2000s in the Darfur region, where they were used by the government of long-ruling Sudanese president Omar al-Bashir to help the army put down a rebellion.

An estimated 2.5 million people were displaced and 300,000 killed in the conflict.

International Criminal Court prosecutors accused government officials and Janjaweed commanders of genocide, war crimes and crimes against humanity in Darfur.

Over time the forces grew, and were used as border guards in particular to clamp down on irregular migration. In tandem, Hemedti's business interests grew with help from Bashir, and his family expanded holdings in gold mining, livestock and infrastructure.

Beginning in 2015, the RSF, along with Sudan's army, began sending troops to fight in the war in Yemen alongside Saudi and Emirati troops, allowing Hemedti to forge ties with the Gulf powers.

In 2017, a law legitimizing the RSF as an independent security force was passed. Military sources said the army's leadership had long expressed concern about the development of Hemedti's forces.

Role in prior coups

In April 2019, the RSF participated in a military coup that ousted Bashir. Later that year,Hemedti signed a power-sharing agreement that made him deputy of a ruling council headed by army Gen. Abdel Fattah al-Burhan.

Before the signing in 2019, activists accused the RSF of participating in killing dozens of pro-democracy protesters. Rights groups have also accused RSF soldiers of tribal violence. Hemedti removed immunity from some, allowing for their prosecution. Last year he apologized for crimes by the state against the Sudanese people, without elaborating.

The RSF participated in a coup in October 2021 that halted the transition to elections. Hemedti has since said he regrets the coup and has expressed approval for a new deal to restore full civilian government.

Billions of dollars in international support and debt relief were frozen in the wake of the 2021 coup.

The Sudanese army andpro-democracy groups have demanded the RSF's integration into the regular armed forces.Negotiations on this have been a source of tension that has delayed a final signing of a deal for a new government and a transition towardelections.