Saraki, who was the former governor of Kwara state was detained on Saturday, July, 31, 2021.
During his tenure as Senate President between 2015 and 2019, Saraki faced a series of corruption allegations and false declaration of assets.
In June 2018, he was acquitted by the Supreme Court.
But in his new case with the anti-graft commission, Saraki is reportedly accused of using a network of cronies and proxy companies for theft and laundering of public funds.
According to Premium Times, EFCC investigators have obtained a list of the proxy companies involved and analysed a pattern of suspicious transactions between them and Saraki.