But friends and associates denied categorically that he was involved, saying he had never had any contact with the substance and nor did he have anything to gain by cooperating with the authorities who have banned him.
As the repercussions of the affair rumble on, other amazing theories are being played out in cyberspace on a website called "sub10" where people involved in sprinting air their views.
When world anti-doping supremo Dick Pound called in March for supergrasses, secret meetings and undercover investigators to play a role in catching drug cheats, many thought he was being melodramatic.
But just a few months later it is exactly this kind of covert intelligence which has led to the tetrahydrogestrinone scandal.
Yesterday, UK Sport announced the setting up of a phoneline where drug cheats can be shopped.
This is the stuff of paperback thrillers or TV dramas. However, it shows that Olympic sport has a darker side in addition to the glitz and glory of medal-winning.
The positive tests for THG were not lucky strikes by drug-testers. They resulted from the tip-off in June to the United States Anti-Doping Agency which has described the affair as a "conspiracy involving chemists, coaches and athletes".
Now athletics is preparing to retest 400 samples from the World Athletics Championships which were held in Paris in August. Insiders believe that no other British athletes will be caught up in the scandal. World sport has been accused in the past of dragging its feet in the battle against drugs by taking years to introduce new tests - largely because of worries about lawsuits from athletes.
Certainly a classic piece of whistle-blowing has provoked the quickest reaction to a suspicion of cheating ever.
Coaches have pointed the finger at countries and competitors for drug-taking before and this had led to target testing. But this is the first time that a coach has effectively turned up with the evidence from the crime scene and handed it over to sport's policemen.
It is unlikely that the identity of the whistle-blower will ever come out and there will therefore continue to be wild speculation about it in the comingmonths.
What is demoralising for the testers is the fact that experts who know the drugs scene have told Standard Sport that cheaters usually move on to a new drug after 12 months.
So testers are firing at a constantly moving target and it is clear that more whistle-blowers are going to be needed to stop the cheating.
