A South African prison run by...G4S is illegally holding inmates in isolation for up to three years and denying them life-saving medication, according to a...South African government report. The report lists 62 inmates who were detained in single cells for periods ranging from two weeks to three years, against prison rules. Two of them were not given essential TB and HIV medication during their solitary confinement, it says...G4S...[said] that the controller at Mangaung prison had approved the detention of inmates in single cells..."The controller at Mangaung correctional centre is employed by the department of correctional services to ensure that G4S Correction Services adheres to and operates according to approved policies and procedures. The detention of inmates in single cells at Mangaung correctional centre is approved by the controller." The company said it was not its policy to deny inmates access to TB or HIV medication, and that there were no "dark cells with sparse lighting"...