Sean Gardner, 38, appeared in court in Des Moines on Friday on a charge of producing visual depictions of minors engaging in sexually explicit conduct, which can carry up to 30 years in jail.

A former gymnastics coach who was first accused of abuse more than three years ago has been arrested on federal child porn charges. Sean Gardner, 38, made his first court appearance Friday on a charge of producing visual depictions of minors engaging in sexually explicit conduct.

Sean Gardner, 38, was busted by the FBI for producing child pornography materials after authorities raided his home, finding hundreds of images of children, following an investigation into inappropriate contact with gymnasts at Chow’s Gymnastics and Dance Institute in West Des Moines.