New Delhi, Oct. 22: The American "whistleblower" behind a suspected racket of bribery and defence data leak today claimed that alleged arms middleman Abhishek Verma had used a Delhi-based modelling agency run by a "madam" to win friends and influence people.

Documents released by political activists Prashant Bhushan and Yogendra Yadav on Thursday named BJP parliamentarian Varun Gandhi, who was said to have been "honey-trapped".

The name was mentioned in a letter to the Prime Minister and the defence minister, dated September 16 this year and sent by the "whistleblower", New York lawyer C. Edmonds Allen.

Allen was at one time described as a business associate of Abhishek, who is being investigated since 2006.

In his statement to journalists today, Allen said he had met Abhishek twice after he became "my client in 1999-2000-2012".

Abhishek claims he has filed a case in Delhi High Court alleging Allen is a forger and owes him Rs 55 crore.

Allen said he had been sharing evidence and information with Indian investigating authorities.

"The link the CBI, ED (enforcement directorate) and Delhi police were too scared to investigate was Abhishek Verma's hiring foreign escorts with a madam who ran a modelling agency," he said.

Allen said the CBI had watered the investigations down after Abhishek used his political connections.

Abhishek is the son of former Congress Rajya Sabha MPs Shrikant Verma and Veena Verma. He is a prime accused in the 2005 naval war-room leak case.