Tanveer Ahmed Mir, lawyer for the dentist couple, argued in the special CBI court that to prove its internet router theory, CBI "never sent computer seized from Talwars' home to experts to ascertain whether it was on or off with small gaps in the intervening night of May 15-16, 2008."
Rajesh Talwar, during the recording of his statement, had said that he went to sleep after 11.30 pm and did not use Internet.
"Why has the probe agency so far not revealed which sites Talwar was using on internet?" Mir asked. To confirm Internet router activity, whether it was switched on or off with small gaps, it is required to examine detailed ICP log, detailed computer log and router or modem log, but "these details were never provided to experts by the CBI," the lawyer said.
"Although CBI seized computer from Talwars' house, it did not seize router and modem logs from there. "That's why, CBI's theory of internet router activity was repeatedly switched on or off get demolished here," Mir told the court.
The lawyer added that probe agency had sent ICP log not "detailed ICP log" to Bhupender Singh Awasya, an expert of service provider, to "fully" confirm whether router was switched on or off with small gaps.
"CBI provided brief ICP log to Awasya. Awasya in his statement said that he could not reach any conclusion till he is provided with computer log and router or modem logs. Even thereafter, it didn't provide him with these details," Mir said.