A CBI team under Arun Kumar had concluded that murders were allegedly committed by Krishna Thadarai- help at Talwar's clinic, his friend Rajkumar-- a domestic servant with Praful and Anita Durrani who were Talwars' friends, and Vijay Mandal, driver of Talwars' neighbour.
These findings were trashed by the then CBI Director Ashwani Kumar who found holes in the theory by underlining the gaps in the arguments given by Arun Kumar.
He said that in the exhibit shown by CBI it has no where been written that on the basis of the disclosure statement the recovery of 'kukri' was made on June 14, 2008.
During the trial, the defence had tried to bring forward the role of the three servants saying the lie detector test, brain mapping test and narco analyses test at FSL, Banglore, and the tests indicated Krishna had revealed crucial information leading to the double murders and his complicity is found.
The order notes that the defence cited June 17, 2008 application of CBI filed before the magistrate that Krishna had admitted to have committed the double murders and then his custody remand was granted.