Dishant Tyagi, the party's candidate from Murad Nagar for the Assembly polls next year, runs a school in Morta village.
A teacher of the school alleged that Tyagi called her in his office and sent his gunner and security officer out, Assistant Superintendent of Police Ashish Srivastav.
The complainant alleged that he offered to bear her family expenses. When she spurned his proposal, Tyagi grabbed her from her waist.
The SP leader also threatened the teacher of dire consequences is she told about the incident to anybody.