The following is a chronology of major events related to the Tokyo Olympic organizing committee.

Sept. 7, 2013 -- Tokyo wins bid to host 2020 Summer Olympics.

BUENOS AIRES, Argentina - (From L) Then Japanese Prime Minister Shinzo Abe, former International Olympic Committee President Jacques Rogge, disgraced Tokyo bid chief Tsunekazu Takeda and former Tokyo Gov. Naoki Inose are seen at a signing ceremony in Buenos Aires on Sept. 7, 2013, after Tokyo was chosen as the host city of the 2020 Summer Olympics at the International Olympic Committee's general session. (Kyodo)

Jan. 24, 2014 -- Tokyo Olympic organizing committee established, with former Prime Minister Yoshiro Mori taking the helm as president.

Oct. 16, 2019 -- International Olympic Committee announces plan to relocate marathon and race walking events to Sapporo due to heat concerns.

Jan. 30, 2020 -- World Health Organization declares coronavirus outbreak a global health emergency.

Feb. 4 -- Tokyo Olympic organizing committee sets up task force to deal with coronavirus outbreak.

March 12 -- Olympic flame-lighting ceremony held at site of ancient Olympia in Greece without spectators.

The Tokyo Olympic flame lighting ceremony is held in ancient Olympia, Greece, on March 12, 2020. (Kyodo) ==Kyodo

March 24 -- Japanese Prime Minister Shinzo Abe, IOC President Thomas Bach agree to postpone Tokyo Olympics by one year.

March 30 -- IOC, Tokyo organizers agree to hold Olympics from July 23 to Aug. 8, 2021.

April 7 -- Japanese government declares state of emergency for 7 prefectures including Tokyo to stem the spread of infections and later extends it nationwide, fully lifting the declaration in late May.

Jan. 7, 2021 -- Japanese government declares another state of emergency for Tokyo metropolitan area following resurgence of coronavirus infections.

Feb. 3 -- Mori makes sexist remarks, saying meetings involving women tend to drag on.

Feb. 4 -- Mori apologizes and retracts his comments but says he has no intention to resign.

Yoshiro Mori (R) bows after announcing his resignation as president of the Tokyo Olympic and Paralympic organizing committee on Feb. 12, 2021, in Tokyo. (Kyodo) ==Kyodo

Feb. 4 -- IOC and International Paralympic Committee say Mori's apology closed controversy.

Feb. 9 -- IOC calls Mori's remarks "absolutely inappropriate" in another statement released following widespread criticism.

Feb. 10 -- Toyota Motor President Akio Toyoda joins other Olympics sponsors in criticizing Mori's remarks.

Feb. 11 -- Ex-Japan Football Association chief Saburo Kawabuchi says he is ready to accept Mori's request to take over top job.

Feb. 12 -- Mori announces his resignation. Kawabuchi declines to accept request that he succeed Mori.

Feb. 16 -- Tokyo Olympic organizing committee holds 1st meeting of panel tasked with selecting new president.

Feb. 17 -- Olympic minister Seiko Hashimoto emerges as most likely candidate to take helm of Tokyo Olympic organizing committee at panel's 2nd meeting.

Feb. 18 -- Hashimoto takes over as head of Tokyo Olympic organizing committee.

Japan's Olympic minister Seiko Hashimoto heads to the prime minister's office in Tokyo on Feb. 18, 2021. Hashimoto became the president of the Tokyo Olympic and Paralympic organizing committee the same day after Yoshiro Mori announced his resignation the previous week over sexist remarks. (Kyodo) ==Kyodo

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Chronology of events related to Tokyo Olympics chief Yoshiro Mori