ชมภาพของอดีตประธานาธิบดี South African "Nelson Mandela"
Former South African president Nelson Mandela is undergoing further tests at a Pretoria hospital. The 94-year old was admitted to the hospital on Saturday.
This undated photograph shows Nelson Mandela and his wife, Winnie.
Nelson Mandela and his wife, Winnie, salute well-wishers as he leaves Victor Verster prison on February 11, 1990 after serving 27 years in prison.
South African State President Frederik Willem de Klerk, left, and Deputy President of the African National Congress Nelson Mandela, right, prior to talks between the ANC and the South African government, Cape Town, May 2, 1990.
ANC leader and symbol of resistance to apartheid, Nelson Mandela, is seen as he gives the black power salute to the 120,000 ANC supporters in Soweto's Soccer City stadium in Soweto, near Johannesburg, South Africa, Feb. 13, 1990.