U.N. Secretary General Antonio Guterres has said he intends to visit Hiroshima in August a few days before attending the closing ceremony for the Tokyo Olympics, instead of the opening ceremony, sources close to the matter said Sunday.

The plan reflects Guterres' desire to highlight calls by the U.N. for a "nuclear-free world," by using the opportunity of the event aimed at building a peaceful and better world through sport, the sources said.

Guterres is expected to deliver his message at the annual memorial ceremony in Hiroshima on Aug. 6, marking the 75th anniversary of the 1945 U.S. atomic bombing of the western city, before attending the Olympics closing ceremony three days later.