Sudan's Rapid Support Forces paramilitary group said on Thursday it had established full control over the province of South Darfur and its capital city of Nyala.
The hostilities between the RSF and the Sudanese armed forces in South Darfur intensified in August.
"The Rapid Support Forces (RSF) secured a significant victory today, taking full control of the Sudanese Armed Forces (SAF) 16th Infantry Division in Nyala, South Darfur," the statement read.
The Sudanese regular army allegedly lost up to 2,000 soldiers during the fighting, the RSF said.
"Our most recent victory sends yet another clear signal to all that the RSF maintains the definitive strategic advantage in this war. We now control the second largest state in our glorious country after Khartoum — in addition to numerous other states across Sudan," the statement read.
On April 15, violent clashes broke out between the Sudanese army and the RSF. Paramilitary commander Gen. Mohamed Hamdan Dagalo accused Abdel Fattah Burhan, the head of the Sudanese sovereignty council and commander of the armed forces, of being reluctant to hand over power to the civilian government. The parties to the conflict have since introduced a number of temporary nationwide ceasefires, but none has helped settle the conflict.
The UN estimates the death toll from the conflict in the hundreds, while the Red Cross has warned that extended hostilities risk crumbling the country's healthcare system.