Central Bureau of Investigation (CBI) on Monday filed a case against the owner of Rotomac Pens, Vikram Kothari and several of his associates for defrauding five government banks of more than Rs 800 crore. Earlier in the day, CBI raided at least three locations in Kanpur, Uttar Pradesh in connection with the case after Bank of Baroda had registered a complaint with CBI against Kothari. During a raid at Vikram Kothari's residence, he was questioned by the Bureau along with his wife and son.