who told you that CBI is investigating case against DERA chief?????I have only heard it in this board or some Akali leaders shouting it out loud.CBI has better things to do.Rape investigations are normal police work and not CBI's headache.If you do not know about some organizations work or scope of work,then try to use the RTI and update yourself.Newspapers and Politicians are not considered reliable sources,always.If i were you,I would definitely try to find out things for myself rather than make loud rhetorics.