An elderly man sits on the floor, dozens of bodies lying around him, before a Sudanese rebel fighter approaches and shoots him.

The apparent killing – captured on video shared online by the rebels themselves – took place at a university medical school in El Fasher in Sudan’s western Darfur region after the paramilitary Rapid Support Forces (RSF) took over the city on Sunday.

CNN has identified the location of the massacre as El Fasher University’s School of Medical Laboratory Science, just across the street from the Saudi Hospital where, according to reports cited by the World Health Organization (WHO) on Wednesday, more than 460 people were also killed.

The Sudan Doctors Network, a professional organization, said the RSF “cold-bloodedly killed everyone they found inside the Saudi Hospital, including patients, their companions, and anyone else present in the wards.”

Satellite images of the Saudi Hospital show signs of a massacre, with apparent clusters of bodies and blood-stained ground clearly visible.

Reports of RSF fighters committing large-scale massacres began to emerge within hours of the Sudanese military’s withdrawal from El Fasher earlier this week.

Those accounts have been corroborated by mounting evidence that includes videos and photos from the ground, survivor testimonies and satellite images.

RSF chief Mohamed Hamdan Dagalo, also known as Hemedti, acknowledged Wednesday that there had been “violations” in El Fasher, and said an investigative committee would be launched to investigate and “hold accountable any soldier or any officer who committed a crime.”

In a separate statement, the RSF denied claims of killings at the hospital, describing them as