For Bihar Congress President Ashok Choudhury’s coming days may be tough. If sources are to be believed, his wife Nita Choudhury had taken a loan of Rs seven crore from Punjab National Bank, but the factory could be seen only on the files. After a complaint from the bank, the CBI has been asked to investigate the matter. It is said that it has completed its preliminary investigations and a chargesheet may soon be filed on it.