Up to €165 billion of trade flows through Dublin Port each year, and the port handles 80 per cent of all containerised freight that comes into Ireland.

At Ennis District Court, Det Garda Noel Carroll of Shannon Garda Station told the court that the DPP has directed that the cases are going to be heard in the circuit court before a jury

The man made no application for bail.

The court heard rioting in Dublin city centre last November were the "largest scenes of public disorder that has ever occurred in the history of the State"

Glen Ward, 30, from Finglas, Dublin, and his brother Eric O'Driscoll, 22, also from Finglas, were arrested earlier this week and held for questioning