The four arrested accused -- Dutt, CBI inspector Rajesh Chandra Karnatak, alleged middleman Rajesh Pachisia and businessman Dinesh Chand Gupta -- were produced before the court after expiry of their CBI custody.
Special CBI Judge V K Gupta sent the four accused to jail under judicial custody till June 7 after the agency said their probe into the case is going on and their further custodial interrogation was not required.
According to the CBI, Dutt and Karnatak were in the same branch in the agency and Pachisia was in regular contact with them.
CBI had said that Gupta had a land dispute and a cheating case was registered against him at Amar Colony Police Station here.
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Dutt used to pressurise Delhi Police officials, who were probing the cheating case, to quash the FIR and for this, he had demanded Rs 15 lakh from Gupta, CBI had said, adding that SHO of Amar Colony Police Station was initially reluctant, but later succumbed to pressure and the FIR was quashed.
Dutt, however, had claimed innocence alleging that a conspiracy has been hatched to keep him out of the Supreme Court-monitored Coalgate probe team.