The agency, which has booked Pune-based Khan and few of his alleged associates under criminal charges of money laundering in 2011, swooped down on a total of twelve premises in Mumbai, Pune, Delhi, Gurgaon, Kolkata and Hyderabad.
"Searches were conducted on at least 12 premises in six cities in Hasan Ali case. About Rs 26.3 lakh cash, documents and computer hardware containing information has been seized after the operations," officials said.
In Kolkata, sleuths searched the premises of Khan's alleged associate Kashinath Tapuriah while in Gurgaon they visited the premises of a Swiss hotelier who had been probed in this case earlier. In Pune and Mumbai they searched Khan's residences in posh areas of Peddar Road and Koregaon Park respectively.
Sources said the action against Khan and his other associates in the case has come about after a two-year lull as the agency wants to revive the case and bring to light additional evidences so that a trial against him in a Mumbai court could be initiated and the case brought to its logical conclusion and a verdict is obtained.
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It is also understood that the agency has got "fresh leads" in the case, including by way of help from foreign jurisdictions.
Khan, who was jailed for a long time under the provisions of the Prevention of Money Laundering Act (PMLA), was released on bail in August last year after which he has been living at his homes in the two cities of Maharashtra.
The agency has attached these two immovable assets under PMLA laws and sources indicated these would soon be confiscated.