More than a dozen shops were damaged or looted, Garda Commissioner Drew Harris said, and several police vehicles and three buses were destroyed. One police officer was seriously injured in the rioting and many more were hurt, Harris added.
The Commissioner described "huge destruction from a riotous mob", which police have blamed on a "lunatic, hooligan faction driven by far-right ideology".
Earlier on Thursday, police said a five-year-old girl was in emergency care following the knife attack. A woman in her 30s and two other children aged five and six were also injured.
