The show director of the Olympics opening ceremony has been dismissed, one day before the event is due to be held.
Footage of Kentaro Kobayashi from the 1990s recently emerged in which he appears to be making jokes about the Holocaust.
Japan's Olympic chief Seiko Hashimoto said the video ridiculed "painful facts of history".
The dismissal is the latest in a string of scandals to hit the Games.
Since the start of the year, three men have been forced to step down.
Earlier this week, a composer quit the team creating the ceremony after it emerged he had bullied classmates with disabilities at school
In March, Olympics' creative chief Hiroshi Sasaki quit after suggesting that plus-size comedian Naomi Watanabe could appear as an "Olympic". He later apologized
And in February, Yoshiro Mori was forced to step down as the head of the organizing committee after he made remarks about women that were criticized as "inappropriate". Mr Mori was quoted as saying women talked too much and that meetings with many female board directors would "take a lot of time"
This latest scandal has seen former comedian Mr. Kobayashi strongly criticized for a sketch he performed 23 years ago, in which he and another comedian pretend to be children's entertainers.
In the sketch Mr. Kobayashi turns to his colleague, referring to some paper dolls, saying they are "the ones from that time you said 'let's play the Holocaust'", according to AFP news agency.
"Any person, no matter how creative, does not have the right to mock the victims of the Nazi genocide," Rabbi Abraham Cooper, of the US-based Holocaust research body Simon Wiesenthal Center, said.
Mr. Kobayashi also issued a statement responding to his dismissal.
"Entertainment should not make people feel uncomfortable. I understand that my stupid choice of words at that time was wrong, and I regret it," it said.
Friday's ceremony will officially kick off two weeks of competition. However, after the removal of Mr. Kobayashi, organizers are now reassessing how to hold Friday's event - which will only be attended by 950 people, in order to minimize risks.
"With the opening ceremony being so imminent, we apologize for causing concern to those involved in the Olympics, to the citizens of Tokyo and the Japanese public," Ms. Hashimoto said in a statement.
The scandals have done little to stop massive unease about the Games, which were postponed from last year due to the pandemic. The head of the Tokyo 2020 Olympic Committee admitted this week that he has not ruled out cancellation, even at this late stage.
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