Irish Ferries have denied a report published in today's Irish Independent that the company sanctioned the use of tear gas by security personnel on board its vessels Isle of Inishmore and Ulysses.
The company also denies reports that security personnel on board were equipped with weapons.
Irish Ferries have cancelled all weekend crossings due to industrial action as the tense stand off between the company and workers shows no signs of abating.
SIPTU members remain in control of two of the company's vessels which have been prevented from setting to sea now for two days.
The action came to a head on Thursday when overseas' workers and security staff were deployed on board the Isle of Inismore and Ulysses ferries.
The worker’s union is now threatening to mount blockades of ports unless the security personnel and agency crews are removed.