"The death toll from militia attacks in El Geneina yesterday (Saturday) reached 48", the SUNA news agency said, quoting the local branch of the country's doctors' union.
The latest violence in West Darfur grew out of a fistfight Friday in a camp for displaced people in Genena, the provincial capital, and then escalated, lasting until Sunday.
The violence poses a test for Sudan's transitional government, which signed a peace deal with rebels from the war-torn western region past year and is increasingly responsible for security as a long-running joint United Nations-African Union peacekeeping mission pulls out.
Sudan imposed a statewide curfew in West Darfur.
In addition, they requested protection from the state authorities for the hospitals to which the wounded were transferred: Al-Jeneina University Hospital, Sultan Taedin Hospital, and Al-Naseem Clinic.
Sudanese authorities said they had sent a "high-profile" delegation to calm tensions.
Since the start of the conflict in the African country, roughly 300,000 people have died and as many as 3 million people have been displaced, according to United Nations estimates.
Darfur endured a bitter conflict from 2003 pitting African ethnic minority rebels against Arab nomads backed by the Khartoum government under Bashir.
The latest inter-ethnic violence to rock Sudan's restive Darfur left 47 dead on Monday, after 83 died in separate weekend clashes - and following shortly after a peacekeeping mission ended operations.
Adam Regal, a spokesman for a local organisation that helps run refugee camps in Darfur, shared footage showing the burned homes and property in the Krinding camp following Saturday's attack.
A major source of conflicts in the region has been to do with access to land and water.
On December 31, the UNAMID force formally ended its 13 years of operations in the region.
Mohammed Osman, a Sudan researcher at Human Rights Watch, said the tribal violence in Darfur is an example of why many displaced people protested the end of UNAMID.
"Escalating inter-communal violence has resulted in scores of deaths and injuries, the displacement of almost 50,000 people and the destruction of property", he said in a statement.
Bashir, who is now in custody on trial in Khartoum, is wanted by the International Criminal Court for alleged genocide and war crimes in Darfur.
It plans a phased withdrawal of its approximately 8,000 armed and civilian personnel inside six months.
Hardline ruler Omar al-Bashir - wanted by the International Criminal Court for genocide and other alleged crimes in Darfur - was deposed in April 2019, paving the way for the rebels and the new transitional civilian-majority government to sign a peace deal in October.
Only two groups refrained from signing the peace deal, including one with considerable support in Darfur.