Australian cycling legend Robbie McEwen wants the sport’s international federation to suspend racing in China after two riders tested positive for clenbuterol.

McEwen’s compatriot Michael Rogers and Belgian rider Jonathan Breyne are under provisional suspension for failing drug tests.

Rogers tested positive at the October 20 Japan Cup, a few days after he raced in China.

He is protesting his innocence, claiming a contaminated food source.

Breyne supplied a positive test for the banned substance at the Tour of Taihu Lake in China on November 5.

“I reckon the UCI should take some responsibility & suspend UCI sanctioned races in China #clenbuterol #nocoincidence #$$$$,” McEwen said on Twitter.

The retired star later added: “I’m saying cover ALL the angles #clenbuterol #racinginchina one thing for sure – not many riders will put their hand up to race there in ’14.”

The UCI and WADA have warned athletes to exercise caution in China due to the use of substances such as clenbuterol in livestock production.