The couple's appeal against the High Court order was mentioned before a bench comprising justices B S Chauhan and Dipak Misra which posted the matter for hearing on May 28.
This the second time this month that they have knocked the doors of the apex court with the plea to summon additional witnesses, including ADG (Law and Order) Uttar Pradesh and then CBI Joint Director Arun Kumar to record their statements.
The High Court was of the view that the trial court had the right to decide which of the witnesses should be summoned and their statements recorded.
The couple had moved the High Court after the apex court on May 13 had refused to entertain their petition after taking strong exception to Talwars directly challenging the trial court's order before it.
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The apex court bench had asked them to approach the High Court saying it was a wrong procedure to approach the Supreme Court directly.
The trial court had dismissed their petition on May 6 and ordered recording of statements of Rajesh and Nupur, who are the main accused. The statement of CBI Investigating Officer AGL Kaul, the last prosecution witness, has already been recorded.