The ED had recently raided the farmhouses of RJD chief Lalu Prasad's daughter Misa Bharti and her husband in Delhi in relation to the case.
Both Bharti and her husband have so far not been arrayed as accused by the ED in this case.
During the hearing, advocate Nitesh Rana, appearing for the ED, opposed the bail application saying the investigation in the case was at a crucial stage and if given bail, the accused may tamper with evidence.
The ED has claimed to have identified at least 90 shell firms during its probe. Shell companies are firms set up with nominal paid up capital, high reserves and surplus on account of receipt of high share premium, investment in unlisted companies and no dividend income or high amount of cash-in- hand.
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The case had emerged after the ED had filed a criminal complaint in February this year under the Prevention of Money Laundering Act (PMLA).
The ED suspects that the entire racket is worth about Rs 8,000 crore of slush funds.
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