'There were a lot of people drunk'
GARDAI arrested 30 people at the Phoenix Park on Saturday night amid chaotic scenes at the Swedish House Mafia concert.
Scores of concert-goers, many of them already drinking alcohol, began to arrive at the venue from around 1pm.
Witnesses described seeing people drunk and collapsed on the street, fighting, and lewd acts performed in public.
One woman, who did not wish to be named, said that she left the show at 9pm because she was so uncomfortable with the atmosphere at the venue.
"There were a lot of people drunk and I don't know what else," she said.
The woman, whose brother was one of those attacked, said that she left before the electro dance group even took to the stage.
"It was horrible, it was the worst concert I've even been to," she said. But other revellers said that they enjoyed the night.
"Didn't see any trouble so I am very disappointed to see what has happened," one poster on boards.ie said.
Most of the arrests were for public order offences including possession of drugs for personal use or assault, a garda spokesman said.
A total of 11 assaults had been reported yesterday, nine of which were stabbing incidents.
In contrast, there were no arrests at the Stone Roses concert at the same venue on Thursday night.
Concert promoters MCD have said that they are assisting gardai with their inquiries.
"Obviously we are very disappointed that an individual or very small number of individuals engaged in anti-social behaviour, attempting to spoil the enjoyment of others," a statement said.
Also performing on Saturday was American rap star Snoop Dogg and DJ Calvin Harris.