LOS ANGELES (CBSLA.com) — Professional cyclist Femke Van den Driessche is under heavy fire Saturday, after the Union Cycliste Internationale detained her bike she used during a race in Belgium for an alleged technological fraud violation.

den Driessche’s bike was detained after evidence led to the conclusion that “mechanical doping” occurred.

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The UCI issued a brief statement saying, “that pursuant to the UCI’s Regulations on technological fraud a bike has been detained for further investigation following checks at the Women’s Under 23 race of the 2016 UCI Cyclo-cross World Championships.

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Rumors regarding mechanical doping have been circulating for years within professional cycling, however this is the first instance where a rider has been caught.

“I understand nothing of it”, says seven-time world champion Marianne Vos at Sporza.

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“I never thought it would happen around me and I have never seen it. It just seems to me not an issue,” she added.