Twelve-year-old Abdiwahab - not his real name - sobs as he recounts what happened to him as he escaped from the western Sudanese city of el-Fasher.
The young boy left el-Fasher on Sunday as it fell to the paramilitary Rapid Support Forces (RSF), the paramilitary group that has been fighting a two-and-a-half-year civil war against the army.
In a video received by the BBC, his face reflects deep sorrow and fatigue, his voice low as he describes being assaulted many times by RSF fighters.
Fearing reprisal attacks from RSF fighters, Abdiwahab had joined a wave of people - including some of his family - trying to get out.
The UN estimates that 60,000 have managed to get out of el-Fasher with many narrating horrendous stories of atrocities, including rape.
After three days of walking, Abdiwahab reached the relative safety of Tawila - an 80km (50-mile) journey - but he arrived on his own.
''I left the city with my father and siblings but because of the chaos we were separated, I came to Tawila alone, he says on the video.
He was assaulted on the way and accused of being involved in espionage.
Abdiwahab says that RSF fighters had already taken his mother and one of his sisters about a month ago, and he does not know if they are still alive.
The humanitarian crisis in Sudan continues to escalate as aid agencies struggle to provide for those arriving in Tawila. Many children, like Abdiwahab, arrive unaccompanied, suffering from trauma, malnutrition, and injuries, highlighting the urgent need for humanitarian assistance in the region.
