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MIAMI (CBSMiami) — Police have arrested a man accused of molesting two juveniles that he taught as a martial arts instructor in Miami and say there may be more victims out there.

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The two victims, ages 15 and 10, told police that Rafael Negron, 64, had sexually fondled them during taekwondo classes at 188 N.W. 36th Street in the Wynwood area.

The victims, who are sisters, had been attending classes for the last five years. According to an arrest report, Negron had, on occasion, picked them up from school and even run errands with him.

At some point in time, the girls’ mother had noticed inappropriate text messages on the teenager’s phone sent by Negron, saying that he felt lonely and offered to be the girl’s “sugar daddy” in exchange for having sex with him.

The report goes on to say that last year, Negron exposed himself to the teen and made numerous sexual advances toward her, including kissing, touching and even forcing the girl to touch his penis.

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The younger victim told police Negron would touch her and talk about sex, including telling her he was a “good licker down there.”

Police said Negron admitted to sending inappropriate text messages and making sexual advances. He also admitted that he may have kissed her on the neck.

Negron, however, denied ever touching the victims inappropriately.

He faces several felony charges, including child molestation.

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Miami Police are looking for additional victims.

Peter D'Oench