Officials report that an air strike in the capital of Sudan, Khartoum, has killed seventeen people, including five children.
The walkout on Saturday in the heavily populated Yarmouk region resulted in the destruction of 25 homes.
The warning to intensify attacks against the paramilitary Rapid Support Forces was made by a senior army officer the day before.
A savage power struggle inside the military hierarchy of the country led to fighting between the Sudanese army and the RSF in the middle of April.
Nearly 1,000 civilians have been killed and many more injured, according to a doctors’ union.
Several ceasefires have been announced to allow people to escape the fighting but these have not been observed.
The recent attack targeted civilians in Mayo, Yarmouk, and Mandela areas, according to the RSF. The army has not commented.
Since the start of the conflict, tens of thousands of civilians have fled across the border into neighbouring Chad.
Doctors and hospitals there have been overstretched and struggling to cope.
The violence has also resurrected a two-decade-old conflict in Sudan’s western Darfur region.