Law enforcement officials say a gymnastics coach has been charged with sexual abuse of a minor after being caught inside a darkened gym with a 14-year-old girl.

Prosecutors say 43-year-old Jeremy Link of Kennebunk was seen with his pants around his ankles by the girl's father. Link taught ninja classes at Elite All-Stars of Maine and at another gymnastics facility.

The Portland Press Herald reports the owner of Elite All-Stars hired Link a year ago. She says he passed a background check during the hiring process.

Authorities have not said where the alleged assault took place. Link's phone rang unanswered Monday afternoon. His bail has been set at $15,000 cash or $100,000 bond.