The Directorate of Enforcement (ED) is investigating Mahadev online book betting app, an umbrella syndicate which enabled illegal betting websites to enrol new users, create user IDs and launder money through a layered web of benami bank accounts. Sourabh Chandrakar and Ravi Uppal, who hail from Chhattisgarh, are the main promoters of the app and run their operations from Dubai.