Sources said the hearing by a fast-track court is likely to start from January 3 on a day-to-day basis.
Yaadram, Assistant Commissioner of Police (ACP), posted at the Police Control Room's (PCR) southwest district unit, and MS Dabas, ACP Traffic (southern) range, were suspended for dereliction of duty.
"For Dabas, the orders were issued as the bus on which the rape took place had tinted glasses and thick curtains and it was allowed to ply in his area of jurisdiction," said an officer. "Yaadram was suspended for not acting promptly to the distress call of the couple found dumped near the Mahipalpur Flyover. "
Meanwhile, police also issued showcause notices to two deputy commissioners of police including Satbir Singh Katara, additional DCP (PCR) as well as Premnath, deputy commissioner of police traffic (southern range).
Sources at the Tihar Jail, where three of the six are currently lodged, said they were spending their two-week judicial custody amidst tight security and were 'visibly afraid'.