Dockers at Ireland's busiest container terminal will go back on strike on 22 February, after negotiations over redundancies and working conditions broke down.

The Dublin dock workers said they had served a strike notice on Marine Terminals (MTL), owned by Peel Ports, on Friday after the terminal operator indicated it "would not abide by the arbitrators' ruling".

Arbitrator Finbarr Flood had been tasked with resolving the differences between workers' union Siptu and the MTL management.

It is understood that MTL rejected his recommendations and the workers were also unhappy with them