He said the committee invited the ministers and others to supply the requisite information about previous mass transit schemes regarding disbursement.
He said apportioning blame to security agencies would not suffice, adding that stakeholders in the oil sectors should be held responsible.
An ad hoc committee of the House of Representatives has invited stakeholders in the Lagos International Trade Complex concession over unrecovered N6.5 billion
The renovation work covers the senate and reps chambers, dome in the White House, office construction and library.
The probe is sequel to the audit queries raised by the Office of the Auditor General of the Federation from 2018 till date.
Mr Buba said the ministry must direct all Nigerian missions to abide by section 10 of the 2022 Appropriations Act (as Amended).
The committee on the Joint Venture of the NNPC limited raised concerns when the management of Chevron appeared before the lawmakers in Abuja.
