Kolkata (West Bengal) [India], September 11 (ANI): The father of the deceased trainee doctor from Kolkata’s RG Kar Medical College said that the Chief Minister of West Bengal, Mamata Banerjee, has not done any work and his family is not satisfied with her role in the case. The victim’s father on Tuesday also said that they demanded a CBI investigation due to her “unsatisfied role” in the case. Speaking to ANI, the victim’s father, said, “We are not satisfied with the role of the CM (Mamata Banerjee) in the case; that’s why we went to the CBI. She hasn’t done any work. One of the policemen came…