The controversial sports doctor Mark S. announced in court in Munich on Tuesday that he has been doping cyclists and winter sports enthusiasts since 2012.

S. is an important linchpin in Operation Aderlass.

In a statement read by his lawyer, S. emphasized, among other things, that he never endangered athletes.

He was already arrested in 2019.

Operation Aderlass is a police investigation launched in early 2019 and targeting a doping network operating around the world.

They mainly look at cycling and winter sports.

The case concerns athletes who allegedly had blood transfusions between 2011 and February 2019 at Mark S., who operated from his hometown Erfurt.

S. was already discredited when he was Gerolsteiner and Milram's team doctor.

Bernhard Kohl, the number three of the 2008 Tour de France who later confessed to (blood) doping, says he has been helped by S.

In recent times, more athletes confessed their involvement.

S. is suspected of having provided illegal substances at least 150 times.

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Austrian cross-country skier caught red-handed during blood transfusion