The Hawks are against private rewards offered for information on the Guptas' whereabouts.
But the commissioner says the case against him is a fishing expedition.
Attorney Sarah-Jane Trent Has been accused of pretending to be an Ipid official in its investigation into acting Police Commissioner Khomotso Phahlane.
"They’re talking rubbish."
“O’Sullivan has unlawfully inveigled his way into what otherwise should be an independent investigation."
"The wholly unintelligent act of Mokotedi, will hasten the road to prison for him and his accomplices, for which we should all be grateful," O'Sullivan said.