Thugs who attempt to riot in Dublin again will be met by Gardai using water cannons.
The powerful cannons have been secured from the PSNI in the North on loan.
The cannons are being deployed to Dublin this evening.
The PSNI confirmed the two cannons were supplied in a “Mutual Aid request from An Garda Síochána.”
“These will be solely operated by An Garda Síochána officers.”
Commissioner Harris has also written to all gardaí assuring them of his support if they use their coercive powers to protect themselves and society in a lawful and proportionate manner.
Concerns had been raised following attacks on the streets last night on individual gardaí who did not draw their batons or other weapons to defend themselves.
The Commissioner also said he wanted to commend the gardaí on what he described as a very courageous job done with great professionalism last night.