Yari on Saturday picked the All Progressives Congress (APC) ticket for Zamfara West senate seat.
According to the source, the chairman and managing director of Finex Professional, Anthony Yaro, was also arrested alongside the former Zamfara governor. He said the duo were arrested on Sunday over their alleged role in the fraud allegation.
Yari was picked up at about 5:00 p.m. on Sunday for allegedly benefiting N22 billion from the fund through Finex Professional.
The source said the amount was paid to an individual, only identified as Akindele by the former AGF, from the N84 billion through Finex Professional.
The former AGF was arrested on May 16 over alleged diversion and laundering of N84 billion.
Mr Idris was accused of pilfering the funds through bogus consultancies and other illegal activities using proxies, family members and close associates and were laundered through real estate investments in Kano and Abuja, NAN reported.