If you have heard of the possibility of sexual harassment going on in your company, you need to take it seriously.  Consider hiring an investigator to look at the situation objectively and thoroughly.  The victim is often more likely to open up to a 3rd party individual who has experience with these situations vs. someone internally who may use it against them if it suits their needs.  AISG handles these cases very sensitively and treats the victim with respect.  AISG Stalking & Sexual Harassment Investigations