Woman colleague raised a Police complaint

How should I handle a situation where a woman colleague in my office has raised a false police complaint, that I made vulgar comments about her in the presence of other teammates in Workplace? The comments were like, I'd made up stories of her sharing bed with her team manager. I never had that type of conversation with anyone. What legal or procedural steps should I take to address this accusation and protect my rights? NB: I AM A MALE, ALREADY RAISED A CONCERN WITH HR TEAM, BUT NO ACTION TAKEN.