Also on Wednesday, the Stuttgart city council said it would sue the ruling body UCI for 1 million euros if Italian riders Danilo di Luca and Paolo Bettini were allowed to compete on Sunday.
The Giro d'Italia winner Di Luca has been linked with doping while the reigning world champion Bettini was given a 1500 GMT deadline to sign a voluntary athletes declaration for a clean sport.
Stuttgart organizers said they feared sponsor and TV network withdrawals if the riders are in Sunday's race.
The Giro d'Italia winner Di Luca has been linked with doping while the reigning world champion Bettini was given a 1500 GMT deadline to sign a voluntary athletes declaration for a clean sport.
Stuttgart organizers said they feared sponsor and TV network withdrawals if the riders are in Sunday's race.