The Ontario County Board of Supervisors meets tonight to advance a formal investigation of Sheriff Kevin Henderson and others in his office.
County Administrator Chris DeBolt says a preliminary investigation was launched after an anonymous complaint about sexual harassment in the office.
And DeBolt says Henderson demanded to hear the recording of the anonymous call so he could identify the caller.
The board will vote tonight to approve the nominees to an investigatory committee with subpoena power.
Henderson has said he won't resign.