The officials said Krabbe and Breuer had twice undergone random tests during training last month. Klaus Wengoborsky, who carried out tests for the German Control laboratory in Zinnowitz, said: 'There were certain problems. I cannot say any more than that.'
Clenbuterol is the same banned substance which led to the British weightlifters, Andrew Davies and Andrew Saxton, being dismissed from the Olympic Games last week.
Krabbe, 22, who withdrew from the Olympics having been cleared on a technicality over previous drug-test irregularities, could face a four-year ban if the findings are confirmed by second tests after the Games.Reuse content