Glenn Roeder, the Norwich City manager, is certain the club are innocent of any alleged match-fixing and says the controversy has been an irritation.

The FA has confirmed that it is investigating allegations of attempted match-fixing in the Coca-Cola Championship match between Norwich City and Derby County on October 4. A significant amount of money is believed to have been wagered with bookmakers in the Far East shortly before and during half-time of the match at Carrow Road. The movement in the market was not consistent with expectations, prompting speculation in the betting industry that gamblers were acting on inside knowledge.

But Roeder insists that the club have nothing to hide.

"I don't know the exact details of what's been said and the accusations being made about that particular game but I would be 100 per cent certain there is no one at Norwich City that's involved in anything at all," he said.

"I don't know enough about how it became public. In life, people have to do what they think is right. Whether it is right or wrong is for other people to decide.

"I also believe that too many people publicly state their own opinions when they should keep their own counsel. So when I find out exactly how this has all broken and caused an irritation, I'll decide whether I want to say anything publicly or keep my own counsel.

"Anything like this is not good for the game, not good for any sport. It's only the week before that there were accusations that a snooker player had lost 5-0 and there were funny betting patterns on that result.

"If professional sport isn't clean, what is the point of being involved in it? But it's certainly unsavoury and not welcome anywhere in any sport."

Roeder was also confident that the publicity would not affect his players ahead of tomorrow's game at Bristol City.

"The boys were off yesterday. Knowing how tough they are as people I wouldn't think it would worry them at all."