At least 32 people, including ten children, have been killed in attacks involving artillery and drones in the besieged regional capital al-Fashir.
In addition, RSF is said to have killed 25 civilians and injured many in the large refugee camp Zamzam. The camp was attacked from two different directions by RSF forces in military vehicles and artillery.
The attacks occurred a day after at least 15 people were killed and 25 injured in an attack on another refugee camp in the region.
Al-Fashir is the last city controlled by Sudan's regular army in North Darfur.
RSF has been fighting the military for two years. The country is effectively divided, with the army controlling areas in the north and east and RSF with coordinated groups controlling areas in the west and south.
In March, the military announced that it had retaken the capital Khartum after intense fighting.
