The commission sources here said the case was registered based on legal opinion and that Speaker P Sreeramakrishnan was informed about the development.
As per the legal opinion, George's remarks during a recent press conference amounted to defaming the actress and hurting womanhood.
Further course of action, including recording of the MLA's statement would be decided soon, the sources said.
George is an independent MLA representing Poonjar constituency in the Kerala Assembly.
Popular actor Dileep and six others, including prime accused 'Pulsar' Suni, have so far been arrested in connection with the incident.
The Kerala High Court has deferred the bail plea of Dileep, who is facing charges of plotting the abduction and assault, to August 18.