Disgraced Tour de France winner Floyd Landis said yesterday his positive drugs test was fatally flawed as he continued his campaign to prove his innocence.

The American rider tested positive for excessive levels of testosterone but claims the test was not carried out correctly.

"There are extraneous circumstances that indicate there's some strange things going on with this test," Landis told BBC radio.

"You will see that they clearly broke the rules. The only explanation I can come up with is that there is some agenda here."

Landis said it was wrong for the UCI and WADA to release details of his failed A test before his second "B sample" had been analysed.

"The public display of humiliation they've brought upon me, breaking their own rules in the process, and the excuses they've used have been unacceptable in the least."

Landis is appealing against the decision, a process that could take up to six months.