At least 13 people have been killed - eight of them children - after a drone strike on a house in the Sudanese city of el-Obeid, according to the Sudan Doctors' Network.
Most of the dead were part of the same family, the medical group added.
Although no group has claimed responsibility, the medics allege that the paramilitary Rapid Support Forces (RSF) executed the attack in an area controlled by the army, which it has been attempting to breach for months.
As the civil war between Sudan's army and RSF rebels approaches its third year, the scale of suffering has led to descriptions of it as the world's worst humanitarian crisis by the UN and various aid agencies.
To date, over 11 million individuals have been displaced due to the violence, with hundreds of thousands reported dead. Widespread sexual violence is being used as a weapon of war.
Both the RSF and the Sudanese Armed Forces face accusations of committing atrocities.
Witnesses have indicated that the drone attack on Monday transpired within a residential neighborhood.
The Sudan Doctors' Network has condemned the attack, stating it reflects a dangerous escalation of the policy of indiscriminate killing and systematic bombing of safe residential areas.
Despite RSF advances in other regions, the city of el-Obeid remains under army control.
Analysts note that el-Obeid is strategically important given its location between Khartoum and the Darfur region, where the RSF has set up a parallel government and is alleged to have committed genocide.
This incident follows the RSF's recent strikes on local infrastructure, including a power plant in el-Obeid.
