Under the PMLA, the ED currently has the power to only attach properties bought with the proceeds of crime.
Genesis of the controversy was in engaging AM Films and Cars Ltd when the contract was originally given to another firm at one-third the price by JMW.
Swamy has also approached Enforcement Directorate to investigate the matter under money laundering Act.
Despite repeated attempts, Shah did not respond to text messages and telephone calls.
Rear Admiral (Retd) P N Agarwal has been interrogated by tax officials for alleged evasion of £2.4 million. The I-T department is also looking at money transfers routed through Jersey.
Previously, the expert appraisal committee of the ministry of environment and forest (MoEF) had given consent to the project in February 2014.
In his book, Parakh had said, “The CBI is not equipped to find the truth.