Criticising market regulator Securities and Exchange Board of India (SEBI) for its sluggish approach in handling a case, the Supreme Court rapped SEBI for taking 10 years to conclude an investigation into a case involving alleged violation of listing norms and unfair trade practice. Last year also, the apex court had pulled up SEBI for issuing a show-cause notice (SCN) after a 10-year probe in the Alps Motor Finance Ltd (AMFL) case.