The court extended the accused's custody after he was produced before it from prison and Special Public Prosecutor Nitesh Rana, appearing for Enforcement Directorate (ED), said that the probe in the case was still on.
Dhawan, arrested on November 1, was sent to JC on November 15 by the court after Rana had said he was not required for further custodial interrogation.
The ED had alleged that Dhawan had facilitated the directors of Gujarat-based pharma firm Sterling Biotech Ltd (SBL) in the purchase of several properties and helped in misuse and diversion of the credit facilities of several bank totaling Rs 5,000 crore.
The lower court had on November 14 issued non-bailable warrants against two other persons -- SBL directors Nitin and Chetan Sandesara. The agency told the court that Chetan may have left the country.
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Dhawan was arrested in an alleged bank fraud case involving SBL under sections of the Prevention of Money Laundering Act (PMLA).
The firm and Dhawan were also being probed by the ED for allegedly bribing senior Income Tax department officials in an earlier criminal complaint.
It had alleged that the company had taken loans of over Rs 5,000 crore from a consortium led by Andhra Bank which had turned into non-performing assets.
The FIR had also alleged that the total pending dues of the group companies were Rs 5,383 crore as on December 31, 2016. The ED had taken a cognisance of this FIR to file a money laundering case against them.