Czech Republic rider Roman Kreuziger has been provisionally suspended by the UCI due to a biological passport violation.

Tinkoff-Saxo withdrew Kreuziger from contention for their Tour de France team after being informed of the irregularity and is now suspended.

A Tinkoff-Saxo statement read: "Tinkoff-Saxo was informed by Roman Kreuziger about the UCI Anti-doping Commission's decision to provisionally suspend him, based on their assumption that his future race results are 'likely to be affected by the asserted anti-doping rule violations'.

"Consequently, Roman Kreuziger will not take part in Tour de Pologne, which begins Sunday, as he will remain suspended from all racing until a verdict has been reached in Roman's case.

"Tinkoff-Saxo cannot avoid criticising the timing of this decision - as the rider and team was notified less than 24 hours before the start of WorldTour race Tour de Pologne.

"The team notes that this materially impairs its participation in this important race and that Kreuziger receives his provisional suspension without solid evidence of any wrong doing but only based on the opinion of medical experts of the UCI Anti-doping Commission."

The UCI added in a statement: "The Union Cycliste Internationale (UCI) has imposed a provisional suspension with immediate effect on Tinkoff-Saxo's rider Roman Kreuziger (Czech Republic) in connection with the recent assertion of an anti-doping rule violation based on his athlete biological passport.

"The decision was taken following confirmation received on 1 August, 2014 that Roman Kreuziger intended to participate in the upcoming Tour of Poland and Vuelta a Espana.

"At this stage of the procedure, the UCI will not comment any further."