Protesters from Zamfara State took over the entrance to the Economic and Financial Crimes Commission (EFCC) headquarters on Friday, May 3.
They are urging the anti-corruption agency to resume inquiries into the conduct of Bello Matawalle, the state's former governor.
The group, identified as APC Loyalists Forum by Channels TV, calls for the EFCC to examine all complaints against the ex-governor thoroughly.
During his time as governor, there are claims of diverting contracts worth ₦70 billion.
The EFCC's Director of Public Affairs, Wilson Uwujaren, received a protest letter on behalf of the chairman, assuring the protestors that the EFCC is committed to thoroughly investigating and resolving every corruption allegation.