The Central Bureau of Investigation has arrested Rotomac promoter, Vikram Kothari in connection with the alleged Rs 800 crore bank loan default case. Earlier the CBI took up the Rs 800 crore bank fraud case involving Rotomac. The Kanpur-based company's owner had taken a loan of more than Rs 800 crore from over five state-owned banks. Allahabad Bank, Bank of India, Bank of Baroda (BoB), Indian Overseas Bank and Union Bank of India compromised their rules to sanction loans to Rotomac, the sources said.