The Enforcement Directorate (ED) has conducted search and survey operations at 30 locations, including Delhi NCR, Haryana, Kolkata, Mumbai, and Bhubaneswar, against the promoters of Bhushan Steel Limited (BSL) in connection with a bank fraud of Rs 56,000 crore. The investigation revealed that the promoters and directors of BSL formed several shell companies and rotated funds through a chain of multiple entities.