The ED has alleged that the money received by Talwar was layered through a series of international money transfers and ultimately integrated into Wave Hospitality Private Limited, a company beneficially owned and controlled by the Talwar family in the name of Deepak Talwar's son Aditya Talwar.
Gupta was arrested on the basis of information given by Rajiv Saxena, who had recently turned approver in the case following his extradition from UAE and subsequent arrest by the ED.
The probe which began in July 2017 after the government had ordered a probe into the Pilatus deal. The CBI had begun an investigation into the Rs. 2900 crore Pilatus deal which allegedly involved an absconding arm dealer, Sanjay Bhandari, close to both Rahul Gandhi and Robert Vadra.