Gardaí are warning there will be a clamp down on any trouble at this year's Phoenix Park concerts in Dublin.
A robust policing plan is in place for the events on Wednesday July 10, Saturday July 13 and Sunday July 14.
Over 200 Gardaí and more than 125 stewards will be on duty outside of the concert site.
Last year's Swedish House Mafia gig was marred by violence and anti social behaviour - during which six people were stabbed.
Two young men also died following the event from suspected drug overdoses.
Chief Superintendent Declan Coburn said that he is confident there will not be a repeat of the violent scenes.
"We want people to come and enjoy the concert so there will be a zero tolerance in relation to alcohol, or public order and people urinating in the area," he said.
"If people just come and be responsible there will be searching on people getting on buses and also people coming on the Luas, on the approaches to the park and inside in the park
"So I'm satisfied that we have a plan in place."