A man accused of posing as a massage therapist and sexually assaulting multiple women who bought his services on Groupon has been arrested and charged, California officials say.

Christopher Scott Preston never had a massage therapy license, according to San Diego Police, who said on Tuesday that he had a license number listed on a Groupon page but that he made the number up and has been running his business based on that lie for six years.

A 55-year-old man who claimed to be a licensed massage therapist is accused of inappropriately touching three women during massages at a Mira Mesa gym, and San Diego police are trying to determine if there are other victims.

University City High has placed its freshman football coach, Chris Preston, on unpaid leave after learning of his arrest.