Criminal Investigation Department (CID) today said a money laundering case will be filed if it finds any illegal transaction linked to the murder of Feni madrasa student Nusrat Jahan Rafi. Molla Nazrul Islam, special superintendent of Organised Crime Division of CID, said this while talking to The Daily Star. CID, from some news media and the investigation agency, has come to know that there was some illegal money transition regarding the murder, the CID official said.