In different videos widely circulated online, Ganduje was allegedly captured collecting kickbacks from contractors.
At a press briefing in Abuja on Monday, Magu refused to respond to a question on the video.
A journalist had asked the anti-graft czar to speak on the issue but he responded, “Next question please”.
Critics of the current administration have accused anti-corruption agencies of refusing to act on the videos because Ganduje is a member of the ruling All Progressives Congress (APC).
The governor has distanced himself from the video, accusing Jafar Jafar, publisher of Daily Nigerian, the online publication which leaked the video, of blackmail.
He also said the agency is seeking to extradite Diezani Alison-Madueke, former minister of petroleum resources, because the UK authorities failed to take legal action against her.
“It has taken so long and it is very unreasonable that she is not being tried there,” he said.
“So, we are tired of waiting and that was why I said if you cannot prosecute her, bring her and we will prosecute her. There is no prosecution going on in the UK.
“We are involved in the investigation in this country and outside the country including America and London. I have been there. We have worked and sat together. We cannot wait endlessly. I think three years and above is sufficient for you to take her to court. There is no court process against her in the UK. Nobody is prosecuting her there.” SHARE THIS STORY USING ANY OF THE BUTTON BELOW ⬇ PLACE YOUR TEXT ADVERT BELOW ⬇⬇⬇