The agency, which earlier registered a case under foreign exchange laws in this deal, decided to lodge a criminal case to trace the bribe money involving middlemen and other people named by CBI in its FIR filed in March 2013.
Taking cognizance of the more-than-a-year-old CBI complaint, the agency has booked Tyagi, his family members, European nationals Carlo Gerosa, Christian Michel and Guido Haschke, four companies - Italy-based Finmeccanica, UK-based AgustaWestland and Chandigarh-based IDS Infotech and Aeromatrix, two companies based in Mauritius and Tunisia, few other firms and unknown persons in its criminal complaint filed under the provisions of the Prevention of Money Laundering Act (PMLA).
A total of 21 entities have been named by ED in the case.
Investigators of the agency, sources said, would use legal channels to obtain court documents from Italy.
Sources said that the agency will soon initiate the process of recording of statements of these people even as it dispatches Letters Rogatory (LRs), or judicial requests to a few European countries, including Italy, seeking their cooperation.
Sources also said that the agency has already zeroed in on some of the immovable and movable assets of the accused which will be attached under the provisions of the laundering laws.    

In order to track the alleged ‘bribe money’ in this deal, it was important for the agency to register a criminal case as that would be conducive for it to seek cooperation from other countries under existing treaties and tax information exchange protocols, the sources added.
The supply of 12 VVIP helicopters from AgustaWestland came under the scanner after Italian authorities alleged that bribe was paid by the company to clinch the deal.
The Italian prosecutor who carried out the preliminary inquiry alleged that the CEO of Finmeccanica, the parent company of UK-based AgustaWestland, had used the services of middlemen to bribe Indian officials.

CBI has already approached Defence Ministry seeking relevant documents and other vital details available with them in this regard.
The documents, sources said, would help both the probes registered by ED - of foreign exchange violations (under the Foreign Exchange Management Act) and the laundering case filed on Friday.
Sources said that both cases registered by ED would be looked into separately.
The agency has also got in touch with some banks which were found to have been used to channel funds of private firms and individuals allegedly involved in the case.
CBI's allegation against the former air chief is that he reduced the flying ceiling of the helicopter so that AgustaWestland was included in the bids.

Tyagi has dismissed the allegations against him and denied any wrongdoing.
CBI has questioned most of the India-based accused in this case. It also recently questioned former West Bengal Governor MK Narayanan and Goa Governor BV Wanchoo as "witnesses" in the case.
Defence Ministry has encashed a major chunk of bank guarantees worth over Rs 2,400 crore deposited by AgustaWestland in banks in Italy and India after the deal was scrapped by the previous UPA government in December last year.


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