UN Secretary-General Ban Ki-moon has hailed Nelson Mandela as a "down-to-earth human inspiration".
"Nelson Mandela was a singular figure on the global stage - a man of quiet dignity and towering achievement, a giant for justice and a down-to-earth human inspiration.
"I am profoundly saddened by his passing. On behalf of the United Nations, I extend my deepest condolences to the people of South Africa and especially to Nelson Mandela’s family and loved ones.
"Nelson Mandela showed what is possible for our world and within each one of us - if we believe, dream and work together."