Mandela was hospitalized over the weekend . The Nobel Peace Prize laureate spent 27 years in prison for fighting against oppression of blacks in South Africa . Doctors ran tests on the 94-year - old . Former South African president received the Nobel Peace Prize for fighting racial segregation .
Mandela was hospitalized over the weekend . Doctors ran tests on the 94-year - old . Former South African president received the Nobel Peace Prize for fighting racial segregation .