CBI sources refused to disclose the identity of the accused who were taken into custody by it but said they would be produced in the fast-track court-2 of Bulandshahr on August 23.
Uttar Pradesh Police had arrested six persons, including the prime suspect, in connection with the rape of the woman and her 13-year-old daughter while they were travelling from Noida to Shahjahanpur on the intervening night of July 29-30.
The case was transferred to CBI on the instructions of the Allahabad High Court. The agency had registered a case yesterday and sent a team of forensic experts and DIG-ranked officer to the crime scene.
On the basis of his interrogation, two other gang members -- Zubair and Sajid -- were arrested by the Special Task Force of UP Police. Later, three more accused -- Naresh (25), Bablu (22) and Rais (28) -- were arrested.
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