"CBI officials told us that DNA test confirmed that the skeleton was that of Navruna," victim's parents Atul Chakravorty and Maitri Chakravorty told reporters here.
When CBI office was contacted, it confirmed the information to PTI.
Schoolgirl Navruna had gone missing from her home under Town police station here on September 2012.
Initially CID was probing the case.
It was first thought to be a case of love affair. But, her parents suspected hands of land mafias as they had received threats over a 4 kattha land in the town.
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The CID sought blood sample of the father for a DNA test but he refused to give his blood saying he would do so only if the inquiry was handed over to CBI and the premier investigating agency asks for it.
Navruna's mother Maitri Chakravorty had met Chief Minister Nitish Kumar to sought a CBI probe into her daughter's case and the state government recommended a CBI probe in March this year.