Nupur and Rajesh Talwar, parents of murdered teenager Aaarushi, received a legal setback on Thursday when the Supreme Court rejected their review petition on the investigation and trial into the double murder case of their daughter and domestic help Hemraj in May 2008.
The Talwars would have to stand trial for murder, the apex court said.
"Supreme Court has rejected the review petition. Both judges held that the petition has no merit," said CBI lawyer Rajiv Nanda.
"The order of the magistrate taking cognizance is alright, said the Supreme Court. As of now whatever is the situation will continue and trial will go on," Nanda said.
The court said trial should go on, he said.
Aarushi Talwar´s dentist parents Nupur and Rajesh Talwar, are the key accused in the case.
The Talwars had challenged the magistrate´s interpretation of the evidence that made them accused in the case and wanted the trial to be quashed.
The spacial Central Bureau of Investigation (CBI) court in Ghaziabad earlier on Monday adjourned the trial in the Aarushi-Hemraj double murder case till June 8.
The hearing in the case was adjourned on account of the death of a member of the Ghaziabad Bar Association.
The special CBI court in Ghaziabad on May 25 formally framed charges against the Aarushi´s parents in connection with the case.
The court on May 24 charged Nupur and Rajesh with murder, conspiracy and destruction of evidence.
The couple would be tried for murder.
The Allahabad High Court on May 31 had also rejected the bail plea of Nupur in connection with the case.
The court had said the trial should continue.
Nupur was arrested on April 30 and is lodged in Ghaziabad´s Dasna jail since then.
Teenager Aarushi was found dead, with her throat slit, at the Talwar residence in Noida in the morning of May 16, 2008. The body of Hemraj, Talwars´ domestic help, was found on the terrace the next day.
The case has since spiralled into one of the country´s biggest unsolved cases, with a prolonged investigation marked by admissions of lack of evidence and dramatic twists.
Dentist couple Nupur and Rajesh maintain that they are innocent, and are being framed by the CBI since the agency has not been able to track down the real killers.