The President of the International Cycling Union Pat McQuaid says his organisation are becoming impatient with American anti-doping authorities over the Lance Armstrong case.
They have yet to receive the file of evidence from USADA which led to them stripping Armstrong of his seven Tour de France titles and issuing the rider with a life ban a month ago.
McQuaid said: "UCI assumes that United States Anti-Doping Agency had the file, a full file, because they made decision based on it and therefore it's difficult to understand why it hasn't arrived yet."
He also hit back at suggestions his organisation had been incompetent in not detecting such wide spread doping in Cycling.
"I really can't understand why you are think that we were naive and incompetent. In all of these Tour de Frances' we did as much testing as has been done in any event or any sporting event. Those samples went to laboratories and they came back negative. We couldn't anything more than that.
"Now today we can do more because we have the biological passport which is completely different weapon, but take yourself back to those years and we could work only within the system - and samples came back negative and that was only what we can do.
"If its proven that all of these activities were going on over that period of time, in this one team, because that's about that is to do with one team, then one can assume that other team were doing the similar activities as well. Then one can certainly assume that was black period in our sport. One can admit and accept that was black period in our sport but that is not to apportion of blame, necessarily".