Palermo defender Michel Morganella has been expelled from the London Games after posting insulting comments about Koreans on his Twitter account.

The Swiss, who played in the second match of Group B against Korea on Monday, was sent home for his "insulting and discriminatory" remarks, said Gian Gilli, head of the Swiss Olympic delegation, at a press conference held at the Olympic Press Center on Tuesday.

Morganella has also officially apologized, saying he is "truly sorry for the people in Korea, for footballers, but also for the Swiss delegation and Swiss football in general."

Kim Bo-kyung (right) battles for the ball against Switzerland's Michel Morganella during the Group B soccer match between Korea and Switzerland at the London 2012 Summer Olympics in Coventry, England on Monday. /AP-Newsis

Sporting a Mohican hairstyle, Morganella fooled the referee by taking a dive during Monday's tense encounter that resulted in Korean striker Park Chu-young picking up a yellow card. The Swiss then drew his own yellow card by stamping on Kim Bo-kyung's foot after the new Cardiff City player scored the go-ahead goal to wrap the game up at 2-1.

When Korean football fans complained on his Twitter page, Morganella traded verbal barbs with them. "I am going to batter the Koreans, burn them all… bunch of 'trisos'," he wrote, making a derogatory French reference to people with Down's syndrome.

"Michel Morganella has discriminated against, insulted and violated the dignity of the Korean football team, as well as the Korean people," Gilli said. "While the committee felt that Michel had been provoked on his Twitter account and that he has publicly apologized, the Swiss Olympic Committee and Swiss Football Association condemn Morganella's actions to the fullest."