Acting Managing Director of the Niger Delta Development Commission, Daniel Pondei, appeared to faint as the House of Representatives committee on NDDC grilled him on Monday.
The committee is in its fourth day of public hearing as it investigates alleged financial misappropriation at the agency.
The controversy had seen strong allegations of corruption traded between the Minister and the former MD of the NDDC, Joi Nunei, who appeared before the lawmakers via Zoom on Friday.
Pondei had been grilled for over an hour when he slowly slumped over his desk, appearing too faint.
Several people present at the hearing rushed to his aid, propping him up and attempting to stabilise him, with the proceedings halted.
He then appeared to be in a seizure with a man holding open his mouth as others held him upright.
After he appeared to regain and lose composure intermittently, he was moved out of the session.