Former Secretary to the Government of the Federation, Babachir Lawal, is in the custody of the Economic and Financial Crimes Commission (EFCC).
Lawal was detained on Wednesday.
He was detained over allegation of fraud relating to N200m contract for the cutting of grass in the North East which is linked to the former SGF.
The EFCC is probing Lawal for alleged contract scandal, violation of Public Procurement Act, abuse of office and mismanagement of funds.
His detention came less than 24 hours after former President Olusegun Obasanjo’s statement in which he described President Buhari’s anti-corruption war as one-sided.