Truck which blocked Quinn HQ entrance damages bollards
Police have said they are investigating damage caused to the front of the headquarters of the Quinn Group in County Fermanagh.
A large dumper truck was abandoned at the entrance on Monday morning, preventing cars from going in or out of the Derrylin premises.
It caused damage to bollards at the front of the property.
Anglo Irish Bank announced last week it had removed founder Sean Quinn from his business empire.
Mr Quinn's family owes the bank £2.5bn.
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.