Truck blocking Quinn HQ entrance
A large dumper truck has been placed across the entrance to the headquarters of Quinn Group in County Fermanagh.
The vehicle has prevented cars from going in or out of the Derrylin premises on Monday morning.
It follows the decision by Anglo Irish Bank to remove founder Sean Quinn from his business empire last week.
Mr Quinn's family owes the bank £2.5bn but many people in the border region remain loyal to him, praising him for creating jobs in the area.
Last Thursday, Anglo Irish Bank appointed accountants KPMG to take control of the Quinn family shares in the business.
Anglo Irish Bank chief executive Mike Aynsley said the bank was owed an "enormous" amount of money by the Quinns, which they were not in a position to repay.
Employees have been told that there are no plans for any job losses.
BBC NI District Reporter Julian Fowler said that despite Mr Quinn's downfall many people in the area remained loyal to him because of his contribution to the local economy.
The most profitable part of the Quinn empire, Quinn Insurance, is to be sold after being in administration for the past year.