A Special CBI Court in Lucknow on Tuesday sentenced four persons to Rigorous Imprisonment (RI) for 8 years in a Rs 6.75 crore bank fraud in Uttar Pradesh and slapped a fine of Rs 70 lakh each on them, an official said. The Special Court punished Ramji Mishra, Shyamji Mishra, Akhilesh Kumar Mishra and Manishi Pandey, all private persons, said a CBI statement.