Bougainville's chief secretary, Monovi Amani, has been ordered to go on leave while an inquiry is made into serious allegations of misconduct in office.
The president of the autonomous Papua New Guinea region, John Momis, was responding to questions about Mr Amani during a sitting of the ABG.
The allegations against Mr Amani include misappropriation.
New Dawn quotes President Momis saying PNG's former chief ombudsman, Ila Geno, has been carrying out the inquiry and a report is expected by the end of this month.
He says a decision would then be made by Bougainville's Senior Appointments Committee to either terminate Mr Amani's contract or allow him to resume his role.