The UCI announced on Wednesday that it will proceed with a reanalysis of anti-doping tests conducted in 2016 and 2017 in light of new information and documents from Austrian authorities involved in the "Operation Audelas" investigation.

The scandal broke in February 2019 when authorities raided the Nordic Ski World Championships and found evidence of a blood doping ring. They found 40 blood bags stored in a garage in Erfurt, Germany, associated with former Milram doctor Mark Schmidt.

German authorities later confirmed that 21 athletes from five different sports and eight different countries were under investigation for blood doping.

The UCI subsequently imposed suspensions on Stefan Denifl, Kristijan Dulasek, Kristijan Koren, Borut Bozic, and Alessandro Petacchi.

Preidler initially confessed to having his blood drawn in 2018, but prosecutors allege that he "practiced blood doping regularly, starting with the Giro d'Italia in spring 2017, until his doping confession, and also took growth hormone," and was charged with fraud in Innsbruck

Tom has been charged with fraud in Innsbruck.

His former Sunweb team, which helped Tom Dumoulin win the Giro d'Italia, threatened to sue him if he doped during that race.

Preidler's suspension is listed as provisional on the UCI webpage's list of suspensions, even though a four-year ban was announced in June.

"In light of the information and documentation received from Austrian law enforcement authorities in the Adelrath case, the International Cycling Union (UCI) announces that it has requested the Cycling Anti-Doping Foundation (CADF) to proceed with the necessary re-analysis of the samples taken during the 2016 and 2017 seasons ." the UCI said in a statement.

"During the investigation of Adelrath, close collaboration between the UCI and the Austrian authorities led to the initiation of several proceedings against anti-doping rule violations. Several athletes competing at the highest level have now been sanctioned.

"The UCI thanks all the authorities working on this investigation and will continue to work closely with those involved with the aim of protecting honest athletes and ensuring a clean sport.

"The UCI declines to comment further at this stage."