ABUJA, Nigeria (AP) — A Nigerian lawmaker who led a probe into the nation’s fuel subsidy program that saw billions of dollars lost through fraud has been charged with allegedly soliciting a $3 million bribe from someone targeted by the inquiry.

Rep. Farouk Lawan and his aide Emenalo Boniface pleaded not guilty Friday to the charges they face in a Federal High Court in Nigeria’s capital, Abuja. Justice Mudashiru Oniyang ordered the two men to be held in prison until a bail hearing Feb. 8.