Drama in Kolkata continues days after the mega showdown between the Kolkata police and the CBI. In the latest development, Kolkata police has raided firms related to ex CBI interim chief Nageshwar Rao in Kolkata as well as his wife's firms. Kolkata police has raised allegations of unaccounted money. The raid happened hours after Kolkata police Chief Rajeev Kumar landed in Shillong where he is being interrogated by the CBI in relation to the Saradha chit fund scam.