Madhya Pradesh Chief Minister Kamal Nath's nephew was arrested by Enforcement Directorate on Tuesday. Ratul Puri is under the scanner in an alleged bank fraud case to the tune of Rs 354 crore. Earlier, the Central Bureau of Investigation had also filed a case against him. MP CM Kamal Nath called the action 'purely mala fide' and said that he had nothing to do with his nephew's business.