Paul Warfield Tibbets Jr died at his home in Columbus, Ohio, aged 92.

The five-ton "Little Boy" bomb was dropped on the morning of 6 August 1945, killing about 140,000 Japanese, with many of them dying later.

On the 60th anniversary of the bombing, the three surviving crew members of the Enola Gay - named after Tibbet's mother - said they had "no regrets".