The agency filed the chargeseet in a special Mumbai court charging Ami, a US national, for being the beneficiary of alleged purchase of two apartments at Central Park in New York using $30 million laundered money, which her husband had obtained fraudulently from PNB through Letters of Undertaking (LoU) and Foreign Letters of Credit (FLCs).

The chargesheet was filed on February 28, he said.

It is alleged that the amount was routed through Ami's HSBC Bank accounts traced by the agency, according to reports.

These apartments are part of Nirav Modi's worth Rs 637 crore foreign properties the ED had seized in October last year.

According to agency officials, the apartments were purchased in the name of The Ithaca Trust. One of the properties in Central Park South, New York, was in the name of Central Park Real Estate LLC, a Firestar Group company. In 2018, it was transferred to the Trust.

The alleged beneficiary of The Ithaca Trust is Ami and her children and the settler of the said trust was Nirav Modi's sister Purvi Modi, a Belgian national.

The move is seen as a step to tighten noose around Nirav Modi, who has now surfaced in London where he is believed to be living for several months now.

The agency is also reportedly looking to issue a Red Corner Notice (RCN) against Ami. Interpol has already issued an RCN against Nirav Modi, his brother Neeshal, Purvi and his executive Subhash Parab.

Nirav Modi fled India in January 2018 days before the PNB scam broke. The businessman's whereabouts have remained a mystery since he has been "seen" in New York, Hong Kong and other parts of the world. He, along with his uncle Mehul Choksi of Gitanjali Group, left the country before the Central Bureau of Investigation (CBI) started investigating the PNB scam.

The ED had on May 24 and 26 last year filed chargesheets against both. Non-bailable warrants have also been issued against them.