Kano Zone of the EFCC has arrested and detained Saidu Dakingari, former Governor of Kebbi state.
He is currently being quizzed for his alleged involvement in the sharing of N450 million PDP campaign slush fund.
He is also being asked to explain how another amount of N550 million state funds were diverted to his party, the PDP, during the 2015 presidential campaigns.
A statement in Kano on Thursday by media head of Kano Zone of EFCC, Mr Medard Ehimika, said Dakingari is cooperating with operatives in the investigations.
The statement said more details will emerge when more facts are available.