An ex-coach at a renowned Iowa youth gymnastics academy known for producing top Olympians was arrested for having a trove of child pornography years after he was accused of sexually assaulting multiple young athletes.

Sean Gardner is facing federal charges for child pornography, alleging he used a hidden camera to record underage gymnasts in Mississippi.

Sean Gardner, a former gymnastics coach at Chow’s Gymnastics and Dance Institute in West Des Moines, Iowa, has been arrested on child pornography charges.