Switzerland's Michel Morganella has been expelled from the Olympics for posting a racist message on Twitter.
The Swiss Olympic team chief, Gian Gilli, said Morganella, a member of the football squad, was being stripped of his Olympic accreditation before Switzerland's final group match against Mexico on Wednesday.
He "discriminated against, insulted and violated the dignity of the South Korea football team as well as the South Korean people," Gilli said.
Morganella posted an offensive message aimed at South Korean people after Switzerland lost 2-1 to South Korea on Sunday.
Morganella said: "I made a huge mistake after the disappointing result.
"I wish to apologise to the people in South Korea and their team, but also to the Swiss delegation and Swiss football in general. I obviously accept the consequences for my actions."
The Swiss newspaper Le Matin published images of a tweet from the player's account [at] morgastoss. The account has since been deleted.
The 23-year-old defender is the second Olympic athlete kicked off a team for offensive Twitter comments.
Greece dropped the triple jumper Voula Papachristou last week after she posted a comment mocking African immigrants.