Cracking down on shell company operations, Enforcement Directorate has arrested two Delhi-based businessmen in connection with its probe in Rs 8,000-crore money laundering and black money racket. Agency said it has arrested Surendra Kumar Jain and Virendra Jain. At least 90 shell firms are under scanner of the agency. It has identified 26 of them for allegedly laundering about Rs 62.20 crore in funds.