Mendez indicated that solitary confinement could be used for prisoner protection but must not be longer than 15 days. "Considering the severe mental pain or suffering solitary confinement may cause, it can amount to torture or cruel, inhuman or degrading treatment or punishment when used as a punishment, during pre-trial detention, indefinitely or for a prolonged period, for persons with mental disabilities or juveniles," he said.
For juveniles and people with mental disabilities, an absolute ban should be imposed. The United States are infamous for the application of solitary confinement with approximately 20-25,000 prisoners being held in isolation. Mendez also criticised China where a woman has spent two out of an eight-year-sentence in solitary confinement.