The four men allegedly kidnapped the 11th class student on August 26 near her house in the town, took her by car to the bungalow on the Kanhari Hill road and allegedly gangraped her for three days, Superintendent of Police Manoj Kaushik told reporters here.
Two accused, Sonu Kumar and Ritesh Kumar, were arrested yesterday while the main accused Dhanu Kumar and Anurag Basu alias Anurag Paswan, were absconding, he added.
"Dhanu Kumar is the son of Dy SP (CID) Ajay Ram while Ritesh Kumar is the son of constable Umesh Sharma, who is posted with the Indian Reserve Battalion," the SP said.
The SP said the bungalow belonged to former Trinamool Congress MP and businessman Swapan Sadan Basu, but he is not related to Anurag Basu alias Anurag Paswan, adding the care-taker of the bungalow is missing.
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The father of the victim, who runs a dairy farm, lodged a missing report on August 27 with the police before she returned home the next night.
He lodged an FIR yesterday after the girl narrated her woes.
A team of lady doctors was constituted for medical examination of the girl, the police officer said.
This is the third gangrape incident in the state after Latehar and Ranchi districts within the last ten days.