The Enforcement Directorate (ED) has arrested R K Arora, chairman of real estate company Supertech, in a money-laundering case. The ED has provisionally attached 25 immovable properties belonging to Supertech Group of Companies and their Directors. The properties, valued at Rs 40.39 Crores, were attached earlier in April. The investigation is being carried out under the provisions of the Prevention of Money Laundering Act, 2002. This arrest marks a major development in the case.