Central Bureau of Investigation's lawyer R.K. Saini accused dentists Rajesh and Nupur Talwar for their daughter Aarushi's killing in 2008 and said the two used their home computer's internet all through the night of the murder, indicating that they were not asleep as claimed by them.
The special judge would next hear the case Oct 17.
Aarushi, 14, was found murdered at her parents' Noida residence May 16, 2008. The body of their domestic help Hemraj was found the next day on the terrace of the house.
The CBI claimed that the suspicion was on the Talwars as they disturbed the crime scene and destroyed evidence on Aarushi's body.
Blood stains on the railing of staircases, lock and on the steps were found partially mopped, the CBI said, adding that this indicated the involvement of the dentist couple in the double murder.
The Talwars also tried to influence the doctor who performed the post-mortem on Aarushi, the CBI said.
The CBI lawyer said finger prints collected from the Talwars' house from a whisky bottle also suggested the involvement of the parents of the teenager in the murder.