Tokyo 2020 Olympics chief Yoshiro Mori resigned on Friday and apologised again for sexist remarks that sparked a global outcry, leaving the troubled Olympics searching for a chief five months from the opening ceremony.
The resignation of former prime minister Mori, 83, will further erode confidence in the organisers' ability to pull off the postponed Summer Games during a coronavirus pandemic.
A Tokyo 2020 board member told reporters the new president would be chosen by a selection committee.
Among the candidates being considered to succeed him was Olympics Minister Seiko Hashimoto, media said.
Hashimoto, 56, is a seven-time Olympian and pioneering female lawmaker. Her first name is based on the Japanese words for the Olympic flame and she was born just days before the 1964 Tokyo Olympics opened.
Mori sparked a furore when he said during an Olympic committee meeting this month that women talk too much, setting off a chorus of calls for him to be sacked. He initially refused to step down.
"My inappropriate comments caused big trouble. I'm sorry," Mori said at the beginning of a meeting of senior organising committee officials on Friday, adding that the most important thing was for the Tokyo Olympics to be a success.