Enforcement Directorate (ED) has filed an Enforcement Case Information Report (ECIR) over the matter and will look into the money laundering angle, if there is any, reported news agency PTI.
Deb was arrested in June for masquerading as the joint commissioner of the Kolkata Municipal Corporation (KMC) and operating dubious immunisation camps in different parts of the city.
Eight of his associates were arrested during the course of the investigation. Police has charged them with attempted murder and other sections of the IPC.
During the investigation, it was found that Deb had opened several bank accounts in the names of senior KMC officials using fake documents.