In its biggest ever crackdown for suspected tax evasion and laundering of black money through stock trading platforms, the Securities and Exchange Board of India,SEBI, Friday barred 260 entities, including individuals and companies, from the securities markets. While the SEBI would further probe these cases, it has also decided to refer the matter to the Income Tax Department, Enforcement Directorate, Financial Intelligence Unit, among other agencies, for necessary actions on their part. Through two separate interim orders, SEBI said that these 260 entities would be restrained from accessing the securities market and from buying, selling or dealing in securities, either directly or indirectly, with immediate effect till further directions.