Two Chinese Olympic badminton players and their team leader have been told to make a public apology, the country's official news agency says.
China's top-seeded pair Yu Yang and Wang Xiaoli were among eight players thrown out for trying to lose matches.
Meanwhile, Team GB will be looking again to cycling and rowing to provide medals on day six of the Games.
And a man was arrested after a cyclist was killed by a collision near the Olympic Park involving a media bus.
The man, in his mid-sixties, was held on suspicion of causing death by dangerous driving.
In other developments:
- The GB men's football team beat Uruguay 1-0 at the Millennium Stadium to reach the quarter-finals
- GB's Michael Jamieson took the silver in the men's 200m breaststroke
- Russian President Vladimir Putin is to make his first trip to Britain for seven years when he arrives on an unofficial visit, to attend Olympic judo bouts
Demands by Chinese officials for the badminton players' public apology were reported by the Xinhua news agency.
Apart from Yu and Wang, South Korean badminton pairs Jung Kyung-eun and Kim Ha-na, and Ha Jung-eun and Kim Min-jung, along with Greysia Polii and Meiliana Jauhari of Indonesia were disqualified.
All four pairs were accused of wanting to lose, in an attempt to secure a better draw for the knockout stage.
Postage stamps of Britain's first 2012 gold medallists, cyclist Bradley Wiggins and rowers Helen Glover and Heather Stanning, go on sale Thursday.
Tour de France winner Wiggins became the most decorated Olympian in British history with his victory on Wednesday, with a total of seven medals.
'Not a celebrity'He won the cycling time trial after Glover and Stanning rowed to victory the same day in the women's pairs, the first British women to win an Olympic gold medal for rowing.
Speaking at a press conference, Wiggins said that despite his success, he did not consider himself to be Britain's greatest ever Olympian.
"I am very normal in my life aside from cycling and I'm not a celebrity," he said.
He also said that, fresh from his victory in the Tour de France, he had been "greedy" and also intended to win Olympic gold, adding that the crowd support on his Olympic time trial ride was "incredible".
Cyclists Sir Chris Hoy and Victoria Pendleton are two of Team GB's main medal hopes on Thursday, as cycling action switches to the velodrome.
Also competing for a medal for Team GB is Jess Varnish, who will partner Pendleton as the women's team sprint cycling event makes its Olympic debut.
The main British medal hopes in rowing on Thursday lie with the men's lightweight four of Richard Chambers, Peter Chambers, Rob Williams and Chris Bartley.
Fran Halsall is competing in the women's 100m freestyle swimming race.
David Florence and Richard Hounslow will be taking part in the men's canoe double race, while Gabby Douglas and Aliya Mustafina take part in the women's all-around gymnastics.
Peter Wilson and Richard Faulds are going for a medal in the men's double trap shooting event.
Meanwhile, a BBC investigation has found illegal websites still offering tickets - which they have no right to sell - and which buyers may never receive.
Police have warned that such sites do not have access to tickets.
Det Supt Nick Downing, the head of the Olympic crime squad, said: "If they're an authorised site selling tickets, you've got to ask the question - where did they get their tickets from? How can they guarantee a supply? They can't."
