The Unnao rape survivor recorded her statement under Section 164 of Code of Criminal Procedure (CRPC) before the special CBI court on Monday, ANI reported.
The agency arrested Sengar, the BJP MLA from Bangarmau after 16 hours of questioning at its office in Lucknow.
After a massive public outrage over the inaction of the Uttar Pradesh police, the case was handed over to the CBI on 12 April. The agency took over the investigation in three cases related to the alleged rape of the 17-year-old girl by the BJP MLA.
Within hours of taking over the investigation, the CBI brought Sengar, who had remained untouched by the state police, to its office in Lucknow, where he was questioned for nearly 16 hours before being taken into custody.
With inputs from PTI