The Associated Press is reporting that Isabel Werth of Germany has been suspended after her horse tested positive for a banned substance.

The suspension takes place just weeks after the German National Equestrian Federation disbanded its national equestrian team in response to wide spread doping.

Five time Olympian Werth’s horse, Whisper, tested positive for fluphenazine, a sedative, at an international competition in Germany in May, according to the AP.

In the meantime, the International Equestrian Federation (FEI) is investigating a member of its president’s family for doping.

Endurance rider Sheik Hamdan bin Mohammed Al Maktoum, the son of Princess Haya of Jordan’s husband, recently completed a 74 ½ mile endurance ride after which his horse tested positive for stanozolol metabolites. The horse tested positive after an event in Dubai, as well.

As president of the FEI, Princess Haya has campaigned strongly against doping. She informed the organization about the cases.