A division bench of justices S Nagamuthu and V Bharathidasan, said there was no reason to interfere with a trial court order or to reduce the quantum of sentence in the case and confirmed life term for the three migrant workers from West Bengal -- Ram Mandal, Uttam Mandal and Ujjal Mandal.
The bench directed authorities to pay Rs two lakh to the family of the deceased from out of the Victim Compensation Fund within four months.
The investigation into the case was transferred to Crime Branch CID on the orders of the then Chief Minister Jayalalithaa and the three were arrested when they tried to use her ATM card.
At the time of the arrests, police had said the woman was waylaid, dragged to a nearby bush and assaulted by the accused when she was walking on a footpath on the main road, which was about one km from the IT park campus.
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It said the trial court acquitted the three from charge of rape for want of sufficient evidence but so far as the other charges were concerned, it has considered the evidence meticulously and found they had wrongfully restrained the deceased, took her to nearby secluded place, killed and robbed her.
"Thus we do not find any infirmity in the judgment of conviction recorded by the trail court," the bench said.