Big Brother candidate Ellis Hillon was removed from the show following an investigation of offensive tweets.
She is said to have written in 2014 a tweet about the terrorist attacks of September 11, which contained a racial fraud.
The 20-year-old was one of 14 candidates who entered the final series on Channel 5 on Friday.
Big Brother said she was removed after investigating "insulting and unacceptable contributions".
The Daily Mirror claimed Ellis' tweet about the Sept. 11 attack was made at the age of 15 on the anniversary of the incident.
The account from which the post was allegedly sent was deleted before entering the show, according to the newspaper.
The spokesman for the Big Brother said their removal from the house will be dealt with in today's episode.
It is not the first time that the producers of the show have been forced to act against insulting statements or contributions from competitors.
During the celebrity version of 2018, which ended on Monday, TV star Rodrigo Alves was formally warned after using the N word in the house.
More than 1,000 complaints were made to the media observer Ofcom about the incident on August 21, and some fans suggested he be removed from the show.
In 2015, the ex-star Tila Tequila was taken out of the picture after a day on the show, after a photo of her as a Nazi concentration camp guard had emerged.
While in 2007, the contestant Emily Parr was also encouraged to leave after using the N-word in a conversation with roommates.
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