"I am saying with full authority that the evidence in the case was not being tampered with," Chouhan told reporters in the state Assembly press room.
"I have not seen the CD," he asserted.
Leader of Opposition in state Assembly, Ajay Singh had yesterday said that Chouhan himself had reportedly seen the CD, which purportedly showed the scandal-hit minister Raghavji in a compromising position, which was objectionable.
If in the BJP's view, Ashwini Kumar had tampered with evidence, then the same thing had been done by Chouhan by reportedly asking the police to provide the CD to him for watching it at his residence, Ajay had said.
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Replying to questions by mediapersons, Chouhan said that the BJP had taken all actions required in the Raghavji case and there was nothing more for him to say in the case.
The state BJP unit yesterday expelled 79-year-old Raghavji from its primary membership following sodomy allegations levelled against him by his domestic help even as police booked him in the matter.
Raghavji was forced to resign from state Cabinet last week after his servant accused him of sexual abuse and a sleaze video CD allegedly showed him in the act.