A forensic expert told a special court in Ghaziabad that sexual assault of teen Aarushi could not be established on the basis of samples provide by CBI.
Prosecution witness BK Mahapatra, a scientist from the Central Forensic Science Laboratory, told Central Bureau of Investigation (CBI) special judge S Lal that he conducted tests on 27 articles submitted by the probe agency.
He said sexual assault could not be established on the basis of the vaginal swab of Aarushi sent for test.
The court also rejected the defence plea to summon on priority 13 witnesses whose names were mentioned by the CBI in the Supreme Court during Nupur Talwar's bail plea hearing Monday.
The court would next hear the case Aug 16.
Aarushi, 14, was found murdered at her parents' Noida residence May 16, 2008. The body of her domestic help Hemraj was found the next day on the terrace of the house.
Nupur Talwar, Aarushi's mother and accused, was taken into custody April 30. She challenged the May 31 Allahabad High Court order rejecting her plea for bail.
She is lodged in Dasna jail in Ghaziabad. The teen's father and co-accused, Rajesh Talwar, is out on bail.