UN Secretary-General Antonio Guterres on Sunday mourned the death of Archbishop Desmond Tutu of South Africa, calling him a towering world figure for peace. "I was greatly saddened to learn of the passing of Archbishop Desmond Tutu, an unwavering voice for the voiceless," said Guterres in a statement. "Archbishop Tutu was a towering global figure for peace and an inspiration to generations across the world. During the darkest days of apartheid, he was a shining beacon for social justice, freedom and non-violent resistance."

Archbishop Tutu`s relentless determination to build global solidarity for a free and democratic South Africa was fittingly recognized by the Nobel Committee in its decision to award him the Nobel Peace Prize in 1984. As chairman of the Truth and Reconciliation Commission, he made an immeasurable contribution to ensuring a peaceful, yet just, transition to a democratic South Africa. His great wisdom and experience were always communicated with humanity, humor and heart, said Guterres.