Though the CBI's probe had found a body of circumstantial clues/evidence against the dentist couple Rajesh Talwar and Nupur, the agency failed to gather direct, material and corroborative evidence.
Admitting the lack of key connecting evidence against the accused in the case, the CBI's closure report, submitted in a designated Ghaziabad court on December 29 last year, said, "The findings of the investigation reveal a number of circumstances that indicate the involvement of the parents in the crime and the cover-up."
It added, "However, there are a number of critical and serious gaps in the circumstances which make it difficult to string together the sequence of events and motive in the gruesome murder."The probe did not find trace of Hemraj's blood on the bed-sheet and pillow of Aarushi Talwar at her bedroom where she was murdered. "There was no evidence to prove that Hemraj was killed in Aarushi's room," said the report.
Dragging marks were found on the steps, between the Talwars' flat and the terrace above them, but those only indicated that the murder took place somewhere other than the terrace.
The probe found no forensic trace of Hemraj's blood on Rajesh's clothes, worn on the night of crime, which had Aarushi's blood though. Further, there were no traces of blood found on Nupur's clothes, as shown in the photograph taken by Aarushi's new digital camera hours before she was murdered, and seized by the CBI.
The CBI could not connect one of the two suspected weapons used in the murders, a golf stick whose striking dimensions were matched with the victims' head injuries, with the crime as no forensic/DNA (hair, skin cell, body fluid or blood) was found on it. The CBI has till date not recovered the other suspected weapon — a sharp tool believed to be a surgical razor/knife or a khukri.
Scientific tests — narco analysis, brain mapping, and polygraph — on Rajesh and Nupur could not indicate their involvement in the crime. No major discrepancies found in their accounts, according to the CBI.
The CBI probe could not explain or link the presence of two fingerprints recovered from a scotch bottle (Ballantine brand) that was kept on the dining table at the Talwars' residence. The bottle though had the bloodstains of both Aarushi and Hemraj indicating that the killer/s had touched it. Despite its best efforts, the CBI could not match the two fingerprints with the Talwars or any other accused. The closure report did not say that the fingerprints were contaminated, which could have indicated that they could have belonged to the Talwars.
The probe could not clearly establish the motive behind the murders or the exact sequence of events from midnight to 6am between 15/16 May, 2008 night. No evidence emerged to show the clear role of Rajesh and Nupur, individually, in the commission of crime. The probe also did not, as indicated in the closure report, link the Talwars with the missing mobile phone set of Hemraj and its presence in Punjab.