Unofficial action by a number of Bus Éireann drivers in Limerick city is causing major disruption to services in the county.
A statement from the company said: "Bus Éireann very much regrets and is deeply concerned by the impact of this action on customers including short notice delays and major service cancellations.
"Bus Éireann has since the issue arose yesterday been urging the use of recognised and agreed dispute resolution mechanisms and continues to make these available."
