Event fixing could play "a very real part" at the Olympics, Hugh Robertson said, adding that he was trying to convince other governments to take the threat seriously to avoid a scandal which could scar the reputation of the Games.
"We know that there are enormous illegal betting syndicates in both the Indian subcontinent and across the far east," Robertson told Sky News.
"We know that pressure is very often exerted on athletes and indeed athletes' families. We know it's out there.
"It's very difficult in cultures where they don't admit that gambling takes place, so it all happens behind closed doors, in back rooms and so on and so forth, it all happens illegally. It's very, very difficult to police that."
This link will take you to the Sky News story and its interview with Mr. Robertson.
Illegal betting and event fixing have not been detected at previous Olympics, according to authorities, but Robertson's ramping up of the rhetoric reflects a concern that not enough is being done across the world to clamp down on the activity.