Former UN chief Kofi Annan dies: Ghanaian media

File photo taken on Dec. 19, 2006 shows then UN Secretary-General Kofi Annan smiling during his final press conference at the United Nations headquarters in New York. Multiple Ghanaian media sources have confirmed that former UN Secretary-General Kofi Annan died at a hospital in Switzerland on Saturday. He was 80 years old. (Xinhua/Zhao Peng)

ACCRA, Aug. 18 (Xinhua) -- Multiple Ghanaian media sources have confirmed that former UN Secretary-General Kofi Annan died at a hospital in Switzerland on Saturday.

He was 80 years old. The cause of death is not yet known.