Police report that a yoga teacher at a private Tarrytown school is accused of sexually abusing a 16-year-old female student.Tarrytown police say 28-year-old Todd Witkin admitted to kissing and inappropriately touching a high school student several times on September 25 inside Hackley School?s gymnasium. Headmaster Walter Johnson says Witkin came to Hackley with strong recommendations and had no known history of prior incidents of this kind.The school is planning to inform all students and parents about the incident on Tuesday. Johnson said the school is shocked and is hoping there are no other victims at the school. He said there is now an order of protection against Witkin, preventing him from going on school grounds.It is unknown whether Witkin was a yoga instructor anywhere else in the area. He is due back in Tarrytown Village Court on October 4.