More than 70 people have been killed following a drone strike on a mosque in Sudan's Darfur region, a senior medical source has told the BBC.
Friday's attack in the city of el-Fasher has been blamed on the paramilitary Rapid Support Forces (RSF), but the group has not taken responsibility.
The RSF and the army have been engaged in a ferocious civil war for more than two years.
The paramilitaries are gaining ground as they fight to seize complete control of el-Fasher - the last army stronghold in Darfur and home to more than 300,000 civilians who have been trapped by the fighting.
One resident told the BBC the drone struck during morning prayers, killing dozens of people instantly.
