Rebels accused of massacring hundreds of people as videos emerge of atrocities and bodies in Sudanese city

By Ivana Kottasová, Vasco Cotovio, Nada Bashir, Gianluca Mezzofiore, CNN (CNN) — 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