Cycling has been forced to confront a new controversy after the sport's head confirmed the first top-level case of "technological fraud" with a hidden motor being found on a Belgian cyclist's bike.
The motor was discovered inside the frame of the machine being used by teenager Femke Van den Driessche at the world cyclo-cross championship in Zolder, Belgium,
Bryan Cookson, the president of the International Cycling Union (UCI), said.
"It's absolutely clear that there was technological fraud. There was a concealed motor. I don't think there are any secrets about that," Cookson told a news conference on Sunday.
Yet the 19-year-old Van den Driessche denied suggestions she had deliberately used a motorised bike in the women's under-23 race and was in tears as she told Belgian TV channel Sporza: "The bike was not mine. I would never cheat."
Van den Driessche said the bike looked identical to her own but belonged to her friend and that a team mechanic had given it her by mistake before the race.